Includes bibliographical references (pages 23-26).
Note
Description based on online resource; title from PDF title page (USGS, viewed July 22, 2021).
Contents
Abstract -- Introduction. Geologic setting -- Sample descriptions -- Analytical methods -- Results -- Discussion. Age of Quantico Formation -- Age of Long Island syncline rocks -- Chopawamsic Formation stratigraphy -- Age of Grandodioritic-tonalitic sheet intrusions -- Metamorphic and structural considerations along the east flank of the Chopawamsic Terrane -- Conclusions -- References cited -- Appendix 1. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) methodology -- Appendix 2. Secondary ionization mass spectrometry methodology.
