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Sedimentology, geochronology, and trace metals in the Nanticoke and Choptank Rivers, and the Chesapeake Bay. Technical report

Technical Report ·
OSTI ID:5014894
; ; ; ;
Marsh and subtidal sediments in the Nanticoke and Choptank Rivers and Blackwater Wildlife Refuge of Maryland's Eastern Shore were analyzed for historic changes in trace metal and polycyclic aromatic hydrocarbons (PAH) content. Long-term accretion rates, determined from /sup 210/Pb geochronology and historical land-use changes recorded in fossil pollen, ranged from 0.18 to 0.74 cm/yr and decreased down the estuary. Changes in pine pollen concentrations suggest marsh accretion rates have accelerated since the late 19th century. Most core profiles indicate recent regional enrichment in Pb, Zn, and Cu.
Research Organization:
Maryland Univ., College Park (USA). Water Resources Research Center
OSTI ID:
5014894
Report Number(s):
PB-86-235645/XAB; TR-84
Country of Publication:
United States
Language:
English

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Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
520301 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Water-- (1987)
54 ENVIRONMENTAL SCIENCES
ALPHA DECAY RADIOISOTOPES
AQUATIC ECOSYSTEMS
AROMATICS
ATLANTIC OCEAN
BAYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHESAPEAKE BAY
COPPER
ECOSYSTEMS
ELEMENTS
EVEN-EVEN NUCLEI
FEDERAL REGION III
GAMETES
GERM CELLS
HEAVY NUCLEI
HYDROCARBONS
ISOTOPES
LAND USE
LEAD 210
LEAD ISOTOPES
MARSHES
MARYLAND
METALS
NORTH AMERICA
NUCLEI
ORGANIC COMPOUNDS
POLLEN
POLLUTION
POLYCYCLIC AROMATIC HYDROCARBONS
RADIOISOTOPES
RIVERS
SEAS
SEDIMENTS
STREAMS
SURFACE WATERS
TRANSITION ELEMENTS
USA
WATER POLLUTION
WETLANDS
YEARS LIVING RADIOISOTOPES
ZINC