7213
Accession Number
22789
Title Of Journal Book
Acid Rain Weathering of Salem Limestone: Surface Characterization of Control Material
Collation
32 p. : ill., 2 tables, 8 figs.
Reference Bibliography
Includes bibliographical references
Report Number
Open-File Report 86-366
Language Of Text
English
Literature Type
Unpublished : Report
Literature Level
Monographic
Abstract
This report provides the baseline analytical characterization of the surface and bulk of freshly quarried Salem Limestone, and also the evaluation of several analytical techniques applied to rock weathering studies. The materials examined were selected from: (1) a control block which is being used in the National Acid Precipitation Assessment Program (NAPAP), and (2) from the stone yard at the National Cathedral in Washington D.C. The surface analytical techniques evaluated included laser ionization mass spectroscopy (LIMS), secondary ion mass spectrometry (SIMS), Auger electron spectroscopy (AES), scanning Auger microscopy (SAM), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX). In the exposed limestone from the Washington National Cathedral stone yard, there is no evidence of near-surface sulfur, nitrogen or lead, elements often associated with anthropogenic activities.
Keywords
acid rain;weathering;Salem Limestone;surface;control; characterization; Washington National Cathedral
pub_id
7213