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Southeastern Section - 62nd Annual Meeting (20-21 March 2013)

Session No. 26
Thursday, 21 March 2013: 8:00 AM-12:00 PM
Conference Room 6–7 (Caribe Hilton)

T19. New Insights into Old Arcs: Petrology, Geochemistry, and Tectonics of Island Arcs

GSA Mineralogy, Geochemistry, Petrology, and Volcanology Division; GSA Structural Geology and Tectonics Division; GSA Geophysics Division

 

Aaron J. Cavosie, Advocates
Paper #
Start Time
 
8:00 AM
Introductory Remarks
1
8:05 AM
COMPARISON OF MAGMA SOURCES IN THE MODERN CARIBBEAN VOLCANIC ARC TO SEDIMENT ENRICHMENT SOURCES IN THE CENTRAL AMERICAN ARC
ATLAS, Zachary D.1, GERMA, Aurélie1, KAUFMANN, Brenna1 and RYAN, Jeffrey2, (1)Department of Geology, University of South Florida, 4202 East Fowler Avenue, SCA 528, Tampa, FL 33620, (2)Department of Geology, University of South Florida, 4202 East Fowler Ave. SCA 528, Tampa, FL 33620, zatlas@cas.usf.edu, zatlas@cas.usf.edu
2
8:25 AM
U-PB AND HF LA-ICP-MS ZIRCON RESULTS FROM PALEOGENE MAGMATIC AND SEDIMENTARY ROCKS OF THE NORTHERN ANDES: TECTONIC IMPLICATIONS FOR WIDE MAGMATIC ARCS DURING SUBDUCTION INITIATION
LARA, Mario, Corporación Geológica Ares, Bogotá, Colombia, CARDONA, Agustin, Escuela de Procesos y Energia, Universidad Nacional de Colombia, Facultad de Minas, Medellin, Colombia, VALENCIA, Victor, School of Earth and Enviromental Sciences, Washington State University, Pullman, WA 99164-2812, ZAPATA, Sebastian, Corporación Geológica Ares, Calle 44A, N. 53-96, Bogota, Colombia, BAYONA, Germán, Corporación Geológica ARES, Calle 44 A # 53-96, Bogotá, Colombia, MONTES, Camilo, Geosciences, Universidad de Los Andes, Bogota, Colombia and FISHER, Christopher, School of the Environment, Washington State University, Pullman, WA 99164, marioelarao@gmail.com, marioelarao@gmail.com
3
8:45 AM
U-PB AND HF ZIRCON ISOTOPES FROM LEUCOGRANITES OF THE SIERRA NEVADA DE SANTA MARTA, COLOMBIA: A RECORD OF EARLY FORE-ARC SHORTENING DURING SUBDUCTION INITIATION IN THE SOUTHERN CARIBBEAN
VANEGAS, Jakeline, School of Geosciences, Universidad Nacional de Colombia, Medellin, 0000, Colombia, CARDONA, Agustin, Escuela de Procesos y Energia, Universidad Nacional de Colombia, Facultad de Minas, Medellin, Colombia, VALENCIA, Victor, School of Earth and Enviromental Sciences, Washington State University, Pullman, WA 99164-2812, LARA, Mario, Corporación Geológica Ares, Bogotá, Colombia and ZAPATA, Sebastian, Corporación Geológica Ares, Calle 44A, N. 53-96, Bogota, Colombia, jvanegaa@gmail.com, jvanegaa@gmail.com
4
9:05 AM
40AR/39AR AGES FOR INTRUSIVE ROCKS OF ST. CROIX
KAPPELMAN, K. Logan1, STORY, Jessica L.1, HAMES, Willis1 and LIDIAK, Edward G.2, (1)Geology and Geography, Auburn University, Auburn, AL 36849, (2)Dept. of Geology & Planetary Science, Univ of Pittsburgh, Pittsburgh, PA 15260, hameswe@auburn.edu, hameswe@auburn.edu
5
9:25 AM
40AR/39AR AGES FOR ANDESITES OF THE GUARACANAL FORMATION, PUERTO RICO
STORY, Jessica L.1, KAPPELMAN, K. Logan1, HAMES, Willis1 and LIDIAK, Edward G.2, (1)Geology and Geography, Auburn University, Auburn, AL 36849, (2)Dept. of Geology & Planetary Science, Univ of Pittsburgh, Pittsburgh, PA 15260, jls0045@auburn.edu, jls0045@auburn.edu
6
9:45 AM
Withdrawn
 
10:05 AM
Break
7
10:15 AM
VOLCANIC GEOLOGY OF DOMINICA, LESSER ANTILLES: THE SURFACE EXPRESSION OF AN ISLAND ARC BATHOLITH
SMITH, Alan L., Geological Sciences, California State Univ, San Bernardino, CA 92407, ROOBOL, M. John, The Anchorage, Sandy Haven, St. Ishmaels, Haverfordwest, SA62 3DN, United Kingdom, MATTIOLI, Glen, Department of Earth and Environmental Sciences, University of Texas Arlington, Arlington, TX 76019 and FRYXELL, J.E., Geological Sciences, California State Univ, Dept. of Geological Sciences California State University, 5500 University Parkway, San Bernardino, CA 92407, alsmith@csusb.edu, alsmith@csusb.edu
8
10:35 AM
NEW TOOLS FOR OLD ARCS: ACCESSORY MINERAL STUDIES OF PUERTO RICAN GRANITOIDS
CAVOSIE, Aaron J.1, ROMAN, Yomayra1, PEREZ, Rafael2, PINCUS, Maya R.1, MONTALVO, Stephanie D.1 and LEBRÓN, Sully A.1, (1)Department of Geology, University of Puerto Rico, PO Box 9000, Mayaguez, PR 00681, (2)Madison, WI 53715, aaron.cavosie@upr.edu, aaron.cavosie@upr.edu
9
10:55 AM
ZIRCON δ18O EVIDENCE FOR CRUSTAL RECYCLING IN ISLAND ARCS: THE CIALES AND MOROVIS STOCKS OF PUERTO RICO
PINCUS, Maya R.1, LEBRÓN, Sully A.2, MONTALVO, Stephanie D.2 and CAVOSIE, Aaron J.2, (1)Geology Department, University of Puerto Rico, Mayagüez Campus, PO BOX 9000, Mayagüez, PR 00681, (2)Department of Geology, University of Puerto Rico, PO Box 9000, Mayaguez, PR 00681, maya.pincus@gmail.com, maya.pincus@gmail.com
10
11:15 AM
THE EXTENT OF THE SAN LORENZO BATHOLITH: AN ACCESSORY MINERAL PERSPECTIVE
LEBRÓN, Sully A., PINCUS, Maya R., MONTALVO, Stephanie D. and CAVOSIE, Aaron J., Department of Geology, University of Puerto Rico, PO Box 9000, Mayaguez, PR 00681, sully.lebron@upr.edu, sully.lebron@upr.edu
11
11:35 AM
ZR SATURATION THERMOMETRY FOR PUERTO RICO GRANITOIDS
MONTALVO, Stephanie D., PINCUS, Maya R., LEBRÓN, Sully A. and CAVOSIE, Aaron J., Department of Geology, University of Puerto Rico, PO Box 9000, Mayaguez, PR 00681, stephanie.montalvo1@upr.com, stephanie.montalvo1@upr.com
 
11:55 AM
Concluding Remarks
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