SDAG monthly meeting
August 19 |
Location:
Dockside Room (north of Catalina room)
Marina Village Conference Center
1936 Quivira Way
San Diego, CA 92109
Directions:
FROM INTERSTATE 5: Take the SEA WORLD DRIVE exit. From SEA WORLD DRIVE,
take WEST MISSION BAY DRIVE on your right. When you see the large green sign that
says QUIVIRA ROAD, get in the farthest left of the two left turn lanes. Turn left, go one
very short block and turn left again. Drive about one half mile and MARINA VILLAGE will
be on your right.
FROM INTERSTATE 8:Exit at SPORTS ARENA BLVD., then take WEST MISSION BAY DRIVE exit to the right.
You will be on INGRAHAM STREET for a short distance from which you will take the next exit
marked WEST MISSION BAY DRIVE on your right. When you see the large green sign
that says QUIVIRA ROAD, get in the farthest left of the two left turn lanes. Turn left, go
one very short block and turn left again. Drive about 1/2 mile and MARINA VILLAGE will be on your right.
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6:00pm -
Social hour
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SDAG Monthly Meeting
6:00pm - Social Hour
7:00 - Dinner
8:00pm - Program
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7:00pm
Dinner
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Menu: Spinach, Apple, and Almond Salad, Baron of Beef with au jus and horseradish, BBQ Chicken, Vegetarian Lasagna,
Mashed Potato and Gravy, Lemon Butter Broccoli
if pre-registered by the deadline, $5 extra if you did not make a reservation.
Click the SDAG member checkbox on the reservation form if you are a member.
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Cost: $ 55.00 Member; Non-Member $ 65.00; Student $ 25.00
Reservations:
Make/Pay your reservation online by clicking the button below
by 6:00pm Tuesday, August 11
RESERVATIONS CANNOT BE ACCEPTED AFTER by 6pm Tuesday, August 11
(Please note beginning January 2024 all meeting reservations will require on-line pre-payment due to venue costs,
venue contracts, and loss of money due to no shows.)
IF YOU DO NOT PRE-PAY YOUR FOOD RESERVATION, WE CANNOT GUARANTEE YOU A MEAL.
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8:00pm - Program
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"OME HIGHLIGHTS OF EUROPEAN PLATE TECTONIC HISTORY - WITH A FOCUS ON ITALY."
Speaker: Dr. Monte Marshall, Ph.D., SDSU Professor Retired
This talk will begin by exploring the main orogenies that assembled the western Europe continent. Having just
returned from a month in Italy, I will focus on the Italian peninsula - its rocks and volcanoes, and role in producing
the Alpine mountains. Like other continents, western Europe is an assemblage of island arcs and continental
fragments that have accreted over the last three billion years. The Baltic Shield, or the countries from Norway to
northwestern Russia, is made of Proterozic to Archean crust. Most of the rest of western Europe was assembled in
the Paleozoic Caledonian and Hercynian orogenies. The plate tectonic history of southern Europe, especially that of
Italy, is complicated and involves collisions with Africa, or parts of Africa, after it separated from the Americas in the
brake-up of Pangea at 200 Ma. The collision of northern Italy with southern Europe caused the beautiful Alpine
mountain chain. At 6 Ma Africa closed the gap between Spain and Morocco, completely closing off the
Mediterranean. In the following millennia the Mediterranean dried up, depositing hundreds of feet of salts. At 5.3
Ma, the Strait of Gibraltar was breached - causing the highest and most voluminous waterfall that we know of!
Geochemical analysis of strata in the Italian mountains that contained the K-T boundary led to the discovery that the
extinction of the dinosaurs was caused by a meteorite impact. It was in these mountains, near Florence, that
Nicolas Steno worked out the three fundamental principles of stratigraphy. Far to the south, Italy's famous
volcanoes of Vesuvius and Etna are being fed by magma generated by the subduction of the deep floor of the
Mediterranean. Located in the suburbs of Naples, Vesuvius is still quite active and is ranked as the world's most
dangerous volcano.
I'm a native San Diegan and was born in Mercy Hospital. After high school, I attended
Villanova University, in the suburbs of Philadelphia, where I majored in philosophy
and minored in astronomy. Upon returning to San Diego, I enrolled at San Diego State
as an astronomy major, but was lured into geology by a charismatic geology
professor, the friendly students, and drinking beer around a campfire in the desert! I
received my second bachelor's degree in geology and geophysics in 1966. I went to
Stanford for my PhD in geology and geophysics. My thesis was measuring the
magnetic properties of dredged seafloor basalt. My research showed that their
magnetization is 10 times that of terrestrial basalt and that they are the main source
of the linear oceanic magnetic anomalies that oceanographers were using to prove
the new theory of plate tectonics.
After graduating in 1971, I continued my paleomagnetic research at the USGS in Menlo Park. But, I really wanted to
teach and, after taking a much needed break of biking around Western Europe for six, adventure-filled months, I
joined the SDSU geology department in 1975. My main courses were geophysics, structural geology, petroleum
geology, and paleomagnetism and plate tectonics. Along with my students, we conducted paleomagnetic studies in
southern California and gravity studies of the faults in metropolitan San Diego. I had three sabbatical years - doing
research and teaching at universities in France, Russia, and the Czech Republic. I retired in 2005. My love of geology
and teaching has continued by giving geology talks, teaching new docents and hiking guides at our Natural History
Museum, and writing articles for SDAG's field trip guidebooks
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Upcoming SDAG meetings - 2026
August 19 - Monte Marshall: "Some Highlights of European Plate Tectonic History, With a Focus on Italy."
September 16 - No Meeting: Annual Field Trip
October 21 - Wes Danskin, USGS retired speaking on "Geology and Water Resources of the San Diego - Tijuana Area"
Novmber 18 - Dave Bloom: "Geology of Morocco"
December 16 - Annual Holiday Meeting at San Diego History Museum with Tom Deméré as speaker
Recordings of past meetings
Note: If the video or sound does not play, try using another web browser. Firefox and Chrome may work on some of the videos. MS Edge and Safari are most likely to work.
7/15/26 Rick Halsey speaking on "For the Love of Rocks, Deep Time, and the Pursuit of Knowledge."
6/10/26 Kathryn Metcalf speaking on "Something Old, Something New: Revisiting Permian to Jurassic tectonics in the Klamath Mountains, Northern California."
5/20/26 Danny Sims speaking on "X-ray diffraction and seismic reflection data constraints
on geothermal mineral brine reservoir modelling, Salton Sea Geothermal Field, Imperial Valley, California."
4/15/26 Jennifer Morton speaking on "Ground-truth Studies of the La Nacion Fault Zone, San Diego, California."
4/15/26 Cici Jobe speaking on "From Park to Garden: Collaborative Soil Testing to Support Food Security in Urban San Diego."
4/15/26 Hannah Lissner speaking on "Assessing the Metals Variability, Clay Mineralogy, and Morphology of San Salvador Island Paleosoils."
3/18/26 Josh Goodwin speaking on "Understanding Geology Licensure in California: PG, CEG, CHg, and PGp; How to apply, serve as a reference, and avoid common violations."
2/18/26 Norrie Robbins Speaking on "From Precambrian Iron Formation to Terraforming Mars - the JIMES Expedition to Santoria"
1/21/26 Ali Fattah on "Updates to the San Diego Municipal Code requirements for Geotechnical Reports - Outreach"
12/17/25 Traditional holiday meeting at the San Diego Natural History Museum - Tom Deméré on "150 years of Paleontology at the San Diego Natural History Museum"
11/19/25 Joint Meeting with AEG Inland Empire Section - Eldon Gath on "San Joaquin Hills, Santa Ana Mountains, Puente Hills, and the Whittier fault: The final(?) grand theory of Orange County's tectonic geomorphic evolution"
10/15/2025 Todd Wirths on "Eocene Paleontology at Tourmaline Surfing Park, La Jolla"
8/20/2025 Dr. Mario Caputo on "Newly Discovered Tetrapod Bones, Insect Trace Fossils, & Eolian Adhesion Structures- Upper Pennsylvanian Wescogame Formation, Supai Group, Grand Canyon, Arizona"
7/16/2025 Rachel Maxwell on a survey of the Mojave-Sonoran Desert Springs and their sources. "Is this spring connected to that Aquifer?"
6/18/2025 Development of the western Hollywood Basin and Cheviot Hills, and newly identified blind thrust in Santa Monica Bay - Dr. Miles Kenney
5/14/2025 Dr. Sebastian Lobo-Guerrero "Landslide Stabilization" (Audio is very quiet first few minutes.)
4/16/2025 Constraining Natural and Anthropogenic Controls on Base of Freshwater and Underground Source of Drinking Water (USDW) In Central San Joaquin Valley - Emily Imperato
4/16/2025 Examination of Middle Cambrian hyoliths from the Manuels River Formation of Avalonian southeastern Newfoundland - Nicolas Oliver
2/19/2025 A New Seismotectonic Framework for Active Faults in Metropolitan San Diego - Karl Mueller
8/21/2024 Upper Cretaceous through lower Eocene strata in San Diego: Messages for the end-Cretaceous impact, extinctions, and paleoclimates - Dr. Pat Abbott
5/15/2024 Exploring Iceland's Geological Wonders: From a Regional Perspective to a Hiking Expedition - Don Barrie & William Buckley
3/19/2024 Mighty Bad Land: A Perilous Expedition to Antarctica Reveals Clues to an Eighth Continent - Bruce Luyendyk
Intro by Pat Abbott to Speaker: Dave Kimbrough
Meetings are usually scheduled for the 3rd Wednesday evening of the month.
Meeting information on this website is normally updated the second week of the month.
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