Premium
Geochemical and mineralogical indications of pH in lakes and soils in central New Hampshire in the early Holocene 1
Author(s) -
Ryan Douglas F.,
Kahler David M.
Publication year - 1987
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1987.32.3.0751
Subject(s) - bedrock , weathering , calcareous , calcite , geology , soil water , carbonate , geochemistry , holocene , watershed , carbonate minerals , geomorphology , soil science , oceanography , chemistry , paleontology , organic chemistry , machine learning , computer science
In central New Hampshire, sediments of some early Holocene lakes were alkaline and contained carbonate minerals despite granitic bedrock and currently acid soils and surface water in their watersheds. Nearby calcareous bedrock contributed to the till of these watersheds while other lakes, more remote from calcareous bedrock, had early Holocene sediments of neutral pH and devoid of carbonate minerals. Calcite rock fragments in alkaline sediments were eroded from alkaline soils in the watershed. Chemical weathering later acidified these soils and surface waters before modem acid precipitation.