TY - JOUR
T1 - Mid-turonian anoxic event in Israel - a multidisciplinary approach
AU - Honigstein, Avraham
AU - Lipson-Benitah, Shulamit
AU - Conway, Brian
AU - Flexer, Akiva
AU - Rosenfeld, Amnon
N1 - Funding Information:
The authors wish to thank Z. Erez, Everymen's University, Tel Aviv, for his helpful comments. This study was supported by a grant of the Pinhas Sapir Center for Development, Tel-Aviv University.
PY - 1989
Y1 - 1989
N2 - Bituminous marls of the Daliyya Formation with up to 2% total organic carbon content, from the Galame quarry, Mount Carmel, northern Israel were studied. A great part of the organic matter is composed of exceptionally abundant dinoflagellate cysts. These sapropelic sediments were deposited in oxygen-depleted, quiet waters in a shelf basin. The massive encystment and good preservation of the cysts, chitinous test linings of foraminifers and the occurrence of pyrite also indicate reducing environments. Primary production was stimulated by upwelling of nutrient-rich oceanic waters, influx of fresh-water and derivates from the Mount Carmel volcanism. A middle Turonian age was determined on the basis of planktonic foraminifers (Helvetoglobotruncana helvetica zone) and ostracodes (Cythereis rawashensis kenaanensis zone). The anoxic event in the studied area post-dated the main phase of the global Late Cenomanian-Early Turonian anoxic event OAE-2, due to a pre-existing structural high in this region.
AB - Bituminous marls of the Daliyya Formation with up to 2% total organic carbon content, from the Galame quarry, Mount Carmel, northern Israel were studied. A great part of the organic matter is composed of exceptionally abundant dinoflagellate cysts. These sapropelic sediments were deposited in oxygen-depleted, quiet waters in a shelf basin. The massive encystment and good preservation of the cysts, chitinous test linings of foraminifers and the occurrence of pyrite also indicate reducing environments. Primary production was stimulated by upwelling of nutrient-rich oceanic waters, influx of fresh-water and derivates from the Mount Carmel volcanism. A middle Turonian age was determined on the basis of planktonic foraminifers (Helvetoglobotruncana helvetica zone) and ostracodes (Cythereis rawashensis kenaanensis zone). The anoxic event in the studied area post-dated the main phase of the global Late Cenomanian-Early Turonian anoxic event OAE-2, due to a pre-existing structural high in this region.
UR - http://www.scopus.com/inward/record.url?scp=0024485282&partnerID=8YFLogxK
U2 - 10.1016/0031-0182(89)90157-0
DO - 10.1016/0031-0182(89)90157-0
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AN - SCOPUS:0024485282
SN - 0031-0182
VL - 69
SP - 103
EP - 112
JO - Palaeogeography, Palaeoclimatology, Palaeoecology
JF - Palaeogeography, Palaeoclimatology, Palaeoecology
IS - C
ER -