TY - JOUR
T1 - Separating ecological assemblages using stable isotope signals
T2 - Late paleocene to early eocene planktic foraminifera, DSDP Site 577
AU - Lu, Gangyi
AU - Keller, Gerta
PY - 1996/1/1
Y1 - 1996/1/1
N2 - Analysis of late Paleocene to early Eocene planktic foraminifera from DSDP Site 577 indicates the presence of two and possibly three isotopically and morphologically distinct assemblages. The surface dwelling assemblage includes species with pustulate-muricate wall texture (e.g., species of the genera Morozovella, Acarinina, Igorina, and Muricoglobigerina). This assemblage is characterized by light δ18O values and large interspecific δ13C variation. It accounts for 82% of the population. The subsurface dwelling assemblage includes species with cancellate-pitted and smoothed-granulate wall textures (e.g., species of the genera Subbotina, "Turborotalia," Planarotalites, Pseudohastigerina, and Chiloguembelina). This assemblage is characterized by heavier δ18O values and small interspecific δ13C variation. It accounts for 14% of the population. The questionable deep dwelling assemblage includes some species with pitted wall texture (e.g., species of the genus "Planorotalites"). This assemblage is characterized by the heaviest δ18O values and accounts for only 4% of the population.
AB - Analysis of late Paleocene to early Eocene planktic foraminifera from DSDP Site 577 indicates the presence of two and possibly three isotopically and morphologically distinct assemblages. The surface dwelling assemblage includes species with pustulate-muricate wall texture (e.g., species of the genera Morozovella, Acarinina, Igorina, and Muricoglobigerina). This assemblage is characterized by light δ18O values and large interspecific δ13C variation. It accounts for 82% of the population. The subsurface dwelling assemblage includes species with cancellate-pitted and smoothed-granulate wall textures (e.g., species of the genera Subbotina, "Turborotalia," Planarotalites, Pseudohastigerina, and Chiloguembelina). This assemblage is characterized by heavier δ18O values and small interspecific δ13C variation. It accounts for 14% of the population. The questionable deep dwelling assemblage includes some species with pitted wall texture (e.g., species of the genus "Planorotalites"). This assemblage is characterized by the heaviest δ18O values and accounts for only 4% of the population.
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U2 - 10.2113/gsjfr.26.2.103
DO - 10.2113/gsjfr.26.2.103
M3 - Article
AN - SCOPUS:0030437504
SN - 0096-1191
VL - 26
SP - 103
EP - 112
JO - Journal of Foraminiferal Research
JF - Journal of Foraminiferal Research
IS - 2
ER -