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Particle-size related, mineral magnetic source sediment linkages in the Rhode River catchment, Maryland, USA

Research output: Contribution to journalJournal article

Published

Journal publication date12/1985
JournalJournal of the Geological Society
Journal number6
Volume142
Number of pages12
Pages1035-1046
Original languageEnglish

Abstract

Characterization of both the source materials and the bottom sediments of an estuary by magnetic characters, on a particle size basis, allows the source of the bottom sediments to be determined and indicates a shift in sediment sources, corresponding to changing land-use patterns. The major source of the sediments in the lower part of cores from the middle of the estuary is eroding shorelines. Soil-derived particulates, from the uplands, dominate the upper part of the cores. This change in source occurred in the early part of the 19th century. The magnetic character of the most recent sediments suggests a progressive depletion, through time, of the upland soils in the finest fractions.