Geological Society of America

7 Petrology (Posters)

Sunday, 19 March 2017
8:00 AM - 12:00 PM
Grand Ballroom, 17th Floor

TRACE ELEMENT ANALYSES OF THE STATEN ISLAND SERPENTINITE

Paper number: 7-9
Program: Technical Sessions
Time: 8:00 AM – 12:00 PM

Authors

Alan I. Benimoff Presenting Author
The College of Staten Island/CUNY, Staten Island

Abstract

This author recently reported the chemical analyses of eleven specimens of Staten Island Serpentinite (Benimoff, 2015) as (1) an average MgO/SiO₂ratio of 1.098;(2) an average Al₂O₃ /SiO₂ratio of 0.009; (3) a positive Eu anomaly in Chondrite normalized spider diagrams and (4) an enrichment in Pb in mantle normalized spider diagrams.

Extended Trace element patterns of this study show enrichments in Pb, U and a negative anomaly in Nb and Ti compared with the other elements when plotted in (1) Rock/Pyrolite Mantle (McDonough and Sun, 1995), (2) Rock/NMORB (Sun and McDonough, 1989), (3) Rock/Primitive Mantle (Lyubetskaya and Korenaga, 2007) and (4) Rock/Primitive Mantle double norm Yb=4 (Sun and McDonough, 1989). This is consistent with our previous results. This is in accord with “residual mantle origin of protoliths” (Deschamps et al., 2013).

Geological Society of America Abstracts with Programs. Vol. 49, No. 2

doi: 10.1130/abs/2017NE-291647

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