Session: Volcanic and Plutonic Connections in Cordilleran Arcs: Integrating Studies from Extinct and Active Systems (Cordilleran Section - 121st Annual Meeting

Session No. 26

Thursday, 3 April 2025: 1:30 PM-5:30 PM

Balboa/Calaveras (Holiday Inn Sacramento Downtown - Arena)

T14. Volcanic and Plutonic Connections in Cordilleran Arcs: Integrating Studies from Extinct and Active Systems

Katie Ardill and Madeline Lewis, Advocates

Paper #

Start Time

1:30 PM

Introductory Remarks

26-1

1:35 PM

FINGERPRINTING DISCRETE MAGMA BATCHES UNDERNEATH MAKUSHIN VOLCANO, UNALASKA ISLAND: EVIDENCE FROM TEST-WELL ST-1 DRILL CORE

SCOTT, Abigail¹, JEAN, Marlon¹, PERFIT, Michael², VETTER, Scott³ and VOLLINGER, Michael⁴, (1)Earth, Geography, and Climate Science, University of Massachusetts, 627 North Pleasant St., Amherst, MA 01003, (2)Geological Sciences, University of Florida, Gainesville, FL 32611, (3)Geology, Centenary College of Louisiana, 2911 Centenary Blvd., Shreveport, LA 71104, (4)Earth, Geography and Climate Science, University of Massachusetts, 627 North Pleasant St, Amherst, MA 01003

26-2

1:55 PM

THE INFLUENCE OF TECTONIC CONTROLS ON PLUTONISM AND VOLCANISM: COMPARING THE CRETACEOUS SIERRA NEVADA BATHOLITH AND THE ACTIVE EL SALVADOR VOLCANIC ARC

RUGGLES, Claire, Department of Geoscience, University of Wisconsin - Madison, Madison, WI 53706, TIKOFF, Basil, Department of Geoscience, University of Wisconsin-Madison, Madison, WI 53703 and GARIBALDI, Nicolas, Santiago, Santiago 7500000, Chile

26-3

2:15 PM

THE EMPLACEMENT THE JACKASS LAKES PLUTON, SIERRA NEVADA, CA: A THREE-STEP INCREMENTAL GROWTH MODEL INTO ITS OWN VOLCANIC EJECTA

CUGINI, Brandon¹, MEMETI, Valbone¹, DUNN, Samantha¹, DURNING, Sadie¹ and PATERSON, Scott R.², (1)Department of Geological Sciences, California State University Fullerton, 800 N State College Blvd, Fullerton, CA 92831, (2)Department of Earth Sciences, University of Southern California, 3651 Trousdale Pkwy, Los Angeles, CA 90089

2:35 PM

Break

26-4

2:50 PM

VOLCANIC RECORDS IN THE IRON MOUNTAIN PENDANT, SIERRA NEVADA, CA: INSIGHTS INTO JURASSIC-CRETACEOUS MAGMATIC EVOLUTION THROUGH FIELD RELATIONSHIPS AND GEOCHRONOLOGY

BENNETT, Alexia and ARDILL, Katie, Department of Geosciences, Texas Tech University, Lubbock, TX 79409-1053

26-5

3:10 PM

VOLCANIC-HYPABYSSAL-PLUTONIC CONNECTIONS FROM SYSTEM TO ARC-SEGMENT SCALE IN THE CENTRAL SIERRA NEVADA ARC, CALIFORNIA

ARDILL, Katie, Department of Geosciences, Texas Tech University, Lubbock, TX 79409-1053

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Cordilleran Section - 121st Annual Meeting - 2025

T14. Volcanic and Plutonic Connections in Cordilleran Arcs: Integrating Studies from Extinct and Active Systems