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SDAG Events / Announcements


September 2018,

Hello SDAG readers,

I wanted to thank Jen Morton (past SDAG president) for leading a great One Stop Wonder trip over the holiday weekend. If you were not able to attend the trip, you might be able to recreate the adventurous site in the upcoming One Stop Wonder guidebook (publication date TBD)! I am really excited about it. You too have a chance to be a part of written history by leading your own expedition. Are you unsure how to lead a trip? Come on down to our September meeting to kick around the dirt with our members. We are generally a bunch of helpful geologists and enthusiasts!

My daughter's pre-school is asking for rocks to help teach the kids. I do not think they understood my clarification of "rock types"...sedimentary, igneous, metamorphic, mineral (common or precious quality), sand-gravel-cobble-boulder size, I really could go on, but you get my drift. I am unloading some of my personal stockpile and if anyone else wanted to get rid of your paperweights, they would appreciate the donation. Our September meeting is not until late in the month, so please email me ( before you exert too much effort.


Chris Livesey -
SDAG President

San Diego Geo-Institute Meeting - Tuesday Nov. 13th

Tuesday, November 13th, 6:00 PM to 8:30 PM

Join the San Diego Geo-Institute on Tuesday, November 13th for Technical Presentation. This month's speaker is Mr. Zhangwei Ning, Ph.D., P.E., with Sixense. The presentation is about Multiple Roles of Satellite Technologies in Geotechnical Instrumentation and Monitoring. The meeting will be held at 2nd floor of Rock Bottom Restaurant (8980 La Jolla Village Dr, La Jolla, CA 92037).

Registration Link:

For registration questions, contact: Matteo Montesi ( or Congpu Yao (

Software Info From Woody Higdon's September Talk

Hi All. For those of you who were not at the September meeting, Woody Higdon discussed his methods and programs he uses for taking amazingly detailed photos in stereo and with gps coordinate attachments. He showed us examples of his from the 2018 debris flows in Montecito. Below are links to free software where one can do more than get their toes wet in this type of work. Thanks again to Woody for the interesting talk!

The GIS software can be found at The canon file display software is called Canon Map Utility and is available on the Canon Camera site. The image viewing program is called Stereo Photo Maker, and available at



Have an idea for a one-day or half-day field trip?
Want to share your favorite aspect of San Diego geology?
Contact SDAG to schedule your One-Stop Wonder!
Your OSW may be chosen to be included in SDAG's One Stop Wonder Guidebook!

Contact Monte Murbach for scheduling!

In the news ... Sulawesi Indonesia earthquake/tsunami

In the news ... California inventory of seismically vulnerable buildings bill is awaiting Governor Jerry Brown's signature

2018 SDAG Field Trip October 12th to 14th 2018

From our Vice President Ken Haase:
Hello SDAG!
I would like to extend my heartfelt thanks to everyone involved with the 2018 Field Trip. We had about 50 people come along and explore the geology of the Mojave Desert. This trip was almost 11 months in the making and it went off without a hitch (maybe a little rain). Thank you to my trip co-leaders Dr. Mario Caputo and Dr. Monte Marshall who's endless geologic knowledge surely made this trip infinitely more interesting than I could have on my own. Dr. Norrie Robbins who unfortunately couldn't make the trip (feel better soon!) but provided great insight into the human history of the Mojave. Thanks to Brian Papurello and crew for setting up the camp kitchen and keeping our bellies full. A big thanks to the SDAG officers, Chris Livesey, Adam Avakian and Heather Reynolds who have been such great help before and during the trip. As always, Diane and Monte Murbach provided the Hawaiian theme and margarita drinks each evening so thanks to them and SDGS board members. Geocon, my employer was gracious enough to provide the beer kegs which kept people more than happy. And thanks to everyone who came on the trip to make it so special! We are working on preparing the volume for the trip, hopefully to be published in 2019. It has been a humbling experience and I thank everyone for their kind words on their enjoyment of the trip. Can't wait to see what our 2019 VP Adam Avakian has in store for us next year.

Keep exploring and see you out there!

Ken Haase, 2018 SDAG Vice President (2019 President)

Detailed itinerary.

2019 SDAG Annual Field Trip - Owens Valley, CA

Hi SDAG members. My name is Adam Avakian. I am the current secretary and future 2019 vice president for SDAG. I am very excited to be tasked with pulling together the annual field trip for 2019 and have some big shoes to fill after attending our latest trip out to the Mojave Desert (thanks to Ken and everyone involved for an amazing trip, and what an awesome group photo!). I am planning on taking us to Owens Valley / Eastern Sierras. I have a few stops in mind already but could definitely use some help on more stop suggestions and especially any enthusiastic speakers who have some knowledge and a love for the geology of Owens Valley. Here is a sneak peek at next year's trip:
  • Owens Valley Fault - 1872 Earthquake Fault Scarp - Lone Pine.
  • Alabama Hills - I was recommended a very interesting geological feature to look at here, also potential campground
  • Poverty Hills Geology - Owens Valley Fault Pressure Ridge and beautiful fault scarps preserved in basalt flows - Tinemaha Dam - Big Pine
  • Crowley Columns - Lake Crowley
  • Bishop Tuff - Ideas??
  • More ideas (basalt flows, glacial moraines etc.??)
Because it's a long drive and there is a lot to see I would like to try to start the trip Friday morning which would require participants to either get up extremely early Friday morning to drive or to camp out with the group Thursday night (my preferred option) or you can join the group midday on Friday. The bulk of the trip would be completed Friday and Saturday. I think I will plan for a half day of stops on Sunday and try to make them on the way back south towards home. Sunday would also be optional if anyone wants to get home earlier they can head out Sunday morning and skip the stops. Any help or advice would be much appreciated. Like I said, speakers are more than welcome. I'm planning to speak at Tinemaha Dam as my company has done work there but that's all I've got so far! Please send responses to

Cheers! Adam

OSW - Encinitas Copper Mine - Write Up by Jennifer Morton

Encinitas Copper Mine (a.k.a. Danes Lea Mine) N33.081651 W117.208037
Rancho Santa Fe Quadrangle
Take I-5 to La Costa Avenue, head east. Turn left onto Rancho Santa Fe Road and right onto San Elijo Hills Road. Bear right at the roadway to a closed landfill and park on the side of the road. Head south on the easternmost dirt path, next to the landfill building. Arrive at the head of Copper Creek trail. Follow this trail until you reach the waterfall and remnants of the mine workings.

OSW Encinitas Copper MineOn September 1, 2018, SDAG visited the site of the Encinitas Copper Mine in the La Costa Preserve. The old mine was situated along what is now known as Copper Creek. According to County Report 3, Geology and Mineral Resources of San Diego County, California, published by the California Division of Mines and Geology in 1963, the mine was discovered in 1887 and was worked until 1917.

We were joined by Richard Bumann, local author/historian and a descendent of one of the founding families of Olivenhain. Mr. Bumann's uncle owned the copper mine from the 1920's through 1940's, and he shared some of the history of the mine and boyhood stories of exploring the mines and at one time lowering himself into one of the shafts! Mr. Bumann confirmed that the mine consisted of two shafts, one on either side of the canyon through which Copper Creek flows. The mine was worked sporadically until 1917, producing a low-grade extract than it would be worth! Piles of light-green rocks - the remaining mine tailings - give away the locations of each of the shafts, which have since been blasted shut for safety. The shaft on the east side of the canyon consisted of two horizontal tunnels terminating at a 140-foot deep vertical shaft, and the shaft on the west side was reported to be a vertical 400-foot shaft. The shafts tend to flood with groundwater, and Mr. Bumann's uncle spent many months pumping out water and restoring the shoring in 1925, but the mine was never again worked.

OSW Encinitas Copper Mine According to the 1963 County Report, the deposit is a northwest-trending zone copper-bearing mineralization, approximately one mile long and 10 to 50 feet wide. The 1939 California Journal of Mines and Geology, Quarterly Chapter of State Mineralogist's Report XXXV describes the vein as a yellowish and black gouge between walls of dark-colored porphyry, and notes that the ore is chalcopyrite associated with pyrite.

OSW Encinitas Copper Mine Steven Jacobs provided a great overview of the formation of porphyry copper deposits. These types of deposits typically form as the result of hydrothermal activity. In the case of the Encinitas Copper Mine, as the magma body of the Western Peninsular Ranges Batholith intruded the Santiago Peak volcanics hydrothermal fluids circulated through preexisting rocks, altering these rocks and depositing metals in the matrix or as a coating in fractures on the surface of surrounding rocks.

Monte Marshall was on hand to discuss the formation of the Santiago Peak Volcanics. These are subduction-related volcanoes, similar to the Andes or the Cascades. He noted that a visible outcrop near the mine consisted of a volcaniclastic deposit - one of three types of structures typically seen associated with the Santiago Peak Volcanics. Others include flows and feeder dikes with vertical foliation.

Thank you to everyone who made this a successful OSW!

Hint for first-time use of AmazonSmile: enter "San Diego Geological Society"
because the system will probably default to some other charity

Volcanology Speaker Wanted!

Wavelength Brewery (our last meeting venue) in Vista is looking for a geologist or volcanologist to give a voluntary talk on the recent volcanic activity going on in Hawaii. If anyone is interested in doing this please contact the brewery. Here is a link to their webpage:

Free Back Issues of California Geology

Free back issues of California Geology will be brought forth at this month's meeting. Several years are organized in binders, going back as early as 1967! Also, some paleontology texts, yours for the taking. See Todd Wirths at the meeting. Rock on!!

2017 SDAG field trip, Julian-Banner Mining District - A Road to Gold

A link to more field trip pictures taken by Rob Hawk here: SDAG 2017 Field Trip Pictures

John Minch book

NEW Interactive Fault Map for San Diego

As part of the update for the San DiegoTijuana Earthquake Planning Scenario, Working Group No. 1's "Fault Map Subcommittee" completed the first publicly available bi-national active and potentially active fault map ( This interactive GIS map includes the first publicly available active and potentially fault map locations from the City of San Diego. The map also integrated the faults south of the border for a bi-national cross border view. This map is an on-going project as our knowledge increases about local active and potentially active faults.

You can expand the map legend on the left side to select layers that can be turned on or off for the map view. You can also select from 1 of 12 base maps at the base map icon. You can click on the fault line in your map layer view to see the meta-data source. In addition, the City of San Diego Seismic Safety Study Geologic Hazards & Faults Maps are available in the layer titled "GeoHaz SD City." Please note that the City "Zone 12 Potentially Active" fault layers was not included in this data, therefore you will need to use the City Maps to find Zone 12.

The Fault Map link is available at:

I would like to thank Carolyn Glockhoff for her endless GIS work, Jim Quinn and the City for providing their data and time, Jerry Treiman with CGS for his time preparing the Surface Rupture and providing their new State fault data layer, and Luis Mendoza at CICESE for providing the faults south of the border. Please contact Diane Murbach ( 619-865-4333), Chair for the SDTJ Earthquake Scenario Working Group #1 - Earth Science, if you have any questions, or see any errors on this new fault map.

Diane Murbach
(619) 865-4333
Engineering Geologist, C.E.G.
Photo of the month CALL FOR PHOTOS!
That's right!...It's back, the SDAG monthly photo competition, featuring the very best of member photo submissions from around the County and beyond. The prize is one free drink at the next meeting, so if you're a winner, just see our resident bartender extraordinaire, Cari Gomes at the next meeting.....or myself (The Secretary) if it's not a SDAG libation supplied event.

Photo by Diane and Monte Murbach

CALL FOR ARTICLES! SDAG invites members to submit articles on their current research or an interesting project they are working on for publication in the monthly newsletter. The article should be no more than 1 page in length. Photos are welcomed, too! Please submit articles to the SDAG secretary via email.


Mike Hart,
What is a seismite? As described by Moretti and Van Loon (2018), and Van Loon (2014) a seismite is a sedimentary bed deformed as a result of horizontal motion and liquefaction caused by earthquakes. The seismic shaking results in liquefaction of silty sands underlying the seismite. That same horizontal motion also triggers translation of the seismite bed on the liquefied layer down gradients that can be less than one degree. The intense deformation likely occurs as the sliding bed of soft sediment finally comes to a halt and the beds react by folding like a skidding carpet.

As previously undescribed (I think) seismite was found on the east bank of Font's Point Wash in the Anza-Borrego Desert State Park approximately 0.7 miles south of Highway S22. In the Font's Point wash exposure the four feet thick seismite was symmetrically deformed into a series of synclinal and anticlinal folds along the once liquefied substrate. As can be seen in the photograph, the tops of the folds have been truncated by the overlying undeformed sediments of the Ocotillo Formation. This indicates that the folded beds were at or very near the water sediment interface at the time of deformation. Since similar soft sediment deformation structures (SSDS) can be formed by other than seismic triggering, most seismite experts agree that no truly diagnostic features exist. Even so, several authors have come up with criteria (listed below) to distinguish seismites from SSDS caused by other mechanisms (Van Loon, 2014);
  1. The SSDS must be laterally extensive
  2. They must occur in a seismically active region
  3. The SSDS are largely restricted to specific stratigraphic horizon
  4. They can be traced over a large area
  5. There must be no evidence of slope movement (by this they apparently mean no evidence ofsubaerial landsliding).
The Font's Point Wash seismite located only two miles west of the San Jacinto Fault meets all of these criteria with the exception that it can only be traced laterally for a few hundred feet.

A.J. Van Loon, 2014, The life cycle of Seismite research, Geologos 20, 2 (2014): 61-66.

Moretti, M, Van Loon, A.J., 2014, Restrictions to the application of diagnostic criteria for recognizing ancient seismites, Journal of Palaeogeography, 3(2): 162-173.

Absolution by the Sea - Now Open For Business!!
Long time SDAG member and past president, Cari Gomes, has assisted in opening a new brewery-restaurant called Absolution by the Sea, from Absolution Brewing Company. The restaurant is located at 7536 Fay Avenue, La Jolla, CA 92037. Phone 619-202-4152. Come enjoy great craft beer and food with your fellow geologists!

Looking For A Sample of Ardath Shale

I am curating an exhibit for the La Jolla Historical Society about Canyons. We would like to include a specific exhibit - a chunk of Ardath Shale. It ties in to so many of our other items: how La Jolla was formed, ecology and native plants, as well as the issue of landslides. For example, the Soledad Mountain Road slope failure of a few years ago was related to the geology: heavy soils over Ardath Shale...according to the reports I've been reading. I'd like to show our visitors what exactly Ardath Shale looks like.

Does your organization have a sample of this type of rock? If not, can you suggest where I might find a sample large enough to put on display?

Susan Krzywicki
(619) 318-4590
California Native Plant Society, Ocean Friendly Gardens

Yosemite Conservancy Outdoor Adventures featuring custom adventures.

52nd AESE Annual Meeting - Niagara Falls, New York - September 26th to 29th 2018

Mark your calendars! The 52nd annual meeting of the Association of Earth will take place in Niagara Falls, New York, September 26 to 29, 2018.

AESE's meetings generally consist of 2 days of technical sessions and a 1-day field trip. Please join us for a fun-filled and educational experience September 2018. Meeting headquarters will be the Conference and Event Center Niagara Falls. The meeting hotel will be the Sheraton at the Falls, on Third Street, where a block of rooms has been set aside for attendees, at a nightly rate of US$139 ($129 for room + $10 facility fee).

Niagara Falls has been a prime tourist destination since the mid-19th century. People come from around the world to see just the falls, themselves. But there is so much more to explore on both the American and Canadian sides of the falls, from world class wineries, Niagara Falls State Park (providing close access to the American and Bridal Veil falls), Niagara Gorge hiking trails, and art galleries to the Schoellkopf Power Plant museum (providing easy access to the bottom of the gorge), Niagara rapids jet boat tours, Old Fort Niagara, Niagara-on-the-Lake and remember to bring your passports if you wish to take in all that the area has to offer!

The meeting is open to anyone interested in earth science editing, publishing and outreach. The program is in the initial planning stage. Watch for meeting updates on AESE's web page A closed Facebook group has been set up to share information . For more information, please contact host chair, Marg Rutka,, and technical program chair, Phil Farquharson

Professional Geologists Needed-Occupational Analysis Task Force Committee for BPELSG Exam Update

Got too many rocks? Are you (or specifically, your spouse...) interested in giving them a good home *away* from your house and garden? Mesa College is looking to collect some rock samples for an inaugural Earth History course. We are specifically looking for sedimentary rocks that include examples of different energy environments (varying grain sizes and shapes) and structures (ripples, cross bedding, planar bedding, graded bedding, etc.). We are also looking to beef up our fossil collection and are looking for all the major phyla: Echinoderms, brachiopods, mollusks (bivalves, cephalopods, gastropods), arthropods (trilobites and more!), corals (Cnidaria), Porifera, Bryozoa, vertebrates (Chordata), etc. Looking for both actual standalone specimens or in the rock still (showing different environments of deposition). We are looking for fossil preservation examples, and also for good trace fossil evidence. Got any sediment grain samples from cool locales? We'll take them! If you have anything else you think provides a good 'story' in the rock, we are willing to check it out! We are collecting ASAP to assess how much needs to be ordered for the fall course. Please contact Jill Krezoski at or Don Barrie at with queries or samples.

ROCK DONATIONS NEEDED: Amy Romano, one of our former student members, is looking for rock donations. Amy is currently attending Humboldt State University and majoring in Geology. She is very involved with Humboldt's Geology Club, and every year the club holds a rock auction to support their activities. If you have any rocks to donate, please contact Amy at

Annual Scholarship Awards by the San Diego Association of Geologists, a program of the San Diego Geological Society, Inc.

A primary function of the San Diego Association of Geologists (SDAG) is to support academic opportunities in geology and related sciences. By-laws of the San Diego Geological Society (SDGS) specify the support of academic opportunity ranging from elementary through graduate levels. The SDAG scholarship program has supported academic research in higher education by awarding scholarships annually to students from two-year and four-year undergraduate and master's level programs. Awards are for outstanding research in geology and related sciences. Nominations are solicited from individual faculty and from geology or related science departments at accredited academic institutions. Evaluation of the relative merit of each nominee is based on an abstract describing the objectives and results of the research being conducted by the student and on the letter of recommendation by the student's mentor or nominating committee.

The annual timeline is as follows:
  • Request for nominations occurs in September.
  • Nomination letters and research abstracts are received by the Scholarship Coordinator in mid to late October.
  • Awardees and their nominators are invited to attend the December SDAG dinner meeting. Scholarship awards are distributed to the student during the December meeting.
  • Students accepting awards are required to give a presentation of their research results usually at a spring dinner meeting of SDAG.
For further information contact SDGS Board at through the Contact Us option


A comprehensive listing of all papers published by SDAG, whether as annual field trip guidebooks or special publications, is available on our website. Entries are sorted by primary author, or chronologically by date of publication, from our first guidebook in 1972, up the San Luis Rey River in 2013, from Coast to Cactus in 2014, and finally over the edge to the Coyote Mountains in 2015. These can be accessed or downloaded as .pdf files. They are fully searchable in Adobe Reader or Acrobat, so if you are researching a topic, "tsunami" for example, you can search for that keyword. This listing will be updated as new books are published. Thanks to Greg Peterson and Hargis + Associates, Inc., for making this possible. See the links below:
SDAG publications sorted by senior author.
SDAG publications sorted chronologically.

Request for Sponsors: 2018 SDAG/SDGS and Publication SPONSORS

On behalf of the San Diego Geological Society, Inc. (SDGS), a public benefit 501(c)3 nonprofit educational corporation, we would like to request tax deductible Donations at our San Diego Association of Geologists (SDAG)

The list of paid Sponsors and the forms to become a Sponsor are located on the SDAG web site at:
Your donation will further the SDGS mission to promote geology and related fields in the greater San Diego region, operating through the San Diego Association of Geologists (SDAG), a committee of SDGS. To achieve our primary educational objective, we organize frequent field trips and maintain a program of monthly meetings featuring speakers on current geological topics. We also publish field trip guidebooks and other publications related to geology and natural history. We encourage scholarship and research by awarding scholarships from the elementary through graduate levels. With your $100 "EMERALD" donation, your name/business will be listed as a sponsor on the SDAG web site ( and in the monthly SDAG meeting newsletters. With your $500 "RUBY" or $1,000 or more "DIAMOND" level donation, your business card will also be included on the SDAG web site and in the monthly SDAG meeting newsletters. In addition, as a "$1,000 or more DIAMOND" level donation you will be presented with a thank you plaque. Should you have any questions regarding a Sponsorship, please contact our non-profit SDGS Secretary (Diane Murbach) at 619-865-4333.


As many of you are aware, the San Diego Geological Society (SDGS) was formed in early 2010 as an official non-profit 501(c)3 corporation, and SDAG is now an organization under this corporation. The reasons for doing this were many and they are spelled out in an informational sheet, the Business Plan of SDGS. The officers of SDGS should be very familiar to you, as they are all past presidents of SDAG. For those of you that would like to read more about SDGS and what it means to SDAG, check out the informational page on the website. Also check out the website

GSA meetings

2018 GSA Annual Meeting in Indianapolis, Indiana

Annual Meeting 2018
Abstract Deadline: August 14, 2018
Meeting Dates: November 4-7, 2018 in Indianapolis, Indiana


If you want to complete your collection, or just see what SDAG was up to in the 1970s, check out our website's publication page, and scroll all the way down: In addition to our very first publication in 1972, a field trip to Otay Mesa, you'll find our 1973 Geology and Hazards of San Diego volume, the first of two guidebooks to the Coronado Islands, in 1978, and our 1987 field guide to the gold mines of Julian. Happy reading!

Short-term rental or long-term lease. Warehouse from 3125 to 6250 sq. ft. Two remodeled offices. Mix and match to meet your needs. Ideal for geotech operations; best possible rates, and we are geology friendly. Contact Lowell Lindsay at Sunbelt Publications 619-258-4911 x110.

SDAG Wear - Monte (Murbach) has a variety of shirts, hats, visors and even a nice vest with the SDAG logo. A small selection is available for purchase at the meetings; all SDAG wear can be ordered from Monte.

DO YOU HAVE AN ANNOUNCEMENT?? Do you have an event, job opening, field trip or other announcement you would like to share with our members?? Just call or email our SDAG Secretary.

San Diego State University

Wednesday seminars, 1 - 2 pm, SDSU in the Chemistry-Geology Building, room CSL-422. Check for details.
Department of Geological Sciences
San Diego State University
San Diego, CA 92182-1020
FAX (619) 594-4372           VOICE (619) 594-6394
*****Parking near campus is limited. There are two lots of meters on the SE side of campus off College, for example and it would be about a 5 minute walk from there. The first lot is meters, and the deeper lot is less expensive ticket machine. *****
The Gordon Gastil Endowed Scholarship Fund continues to seek donations of any amount. Gifts of $ 500.00 or more will be recognized on a plaque to be placed in the remodeled Geology Building. Donations can be sent through SDAG, or contact Pia or Marie, Department of Geological Sciences, SDSU, at (619) 594-5586.

AAPG Student Chapter
American Association of Petroleum Geologists - San Diego State University

Jennifer Luscombe (current student M.S. student at SDSU) and the SDSU-AAPG student chapter officers are beginning the 2016/2017 academic year. Their intention is to support student interest in petroleum and geology related fields. The AAPG student officers are currently organizing an event to stockpile the students with geology supplies and funds to attend the AAPG event in Las Vegas and GSA event in Denver. Details of the event will be forthcoming.

Association for Environmental Health and Sciences

Association of Environmental and Engineering Geologists
AEG San Diego Chapter
AEG Inland Empire Chapter

Coast Geological Society

Inland Geological Society

Los Angeles Basin Geological Society

Meetings are generally held the 4th Thursday of the month at 11:30AM at the Grand at Willow (check their website for their newsletter, for more details, and to make a reservation). Reservations Are Essential.

Society for Mining, Metallurgy, and Exploration, Inc.,
Southern California Mining Section

South Coast Geological Society

The SCGS usually meets on the first Monday of every month, in Orange County. For more SCGS information, visit their website at:

West Coast PTTC

Check the West Coast Petroleum Technology Transfer Council website for workshop date and location.

Our website manager, Carolyn Glockhoff, can create a link from any Corporate Sponsor's listing on the SDAG website to its company website, if one exists. Also, please send the URLs of your favorite geology sites to for listing on the Geologic Links page. These could be data resources, schools, useful government contacts, geologic software, contractors, laboratories, your own company's website, or anything you think would be useful to your colleagues.

DO YOU HAVE AN ANNOUNCEMENT?? Do you have an event, job opening, field trip or other announcement you would like to share with our members?? Just call or email Adam Avakian 2018 SDAG Secretary. Any news regarding upcoming events that may be of interest to the Association or news of your business can be submitted.

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