Lyle, Mitchell (2003): Neogene carbonate burial in the Pacific Ocean

Leg/Site/Hole:
DSDP 85
DSDP 85 573
Identifier:
2004-040722
georefid
10.1029/2002PA000777
doi
Creator:
Lyle, Mitchell
Boise State University, Center for Geophysical Investigation of the Shallow Subsurface, Boise, ID, United States
author
Identification:
Neogene carbonate burial in the Pacific Ocean
2003
Paleoceanography
American Geophysical Union, Washington, DC, United States
18
3
I have compiled CaCO (sub 3) mass accumulation rates (MARs) for the period 0-25 Ma for 144 Deep Sea Drilling Project and Ocean Drilling Program drill sites in the Pacific in order to investigate the history of CaCO (sub 3) burial in the world's largest ocean basin. This is the first synthesis of data since the beginning of the Ocean Drilling Program. Sedimentation rates, CaCO (sub 3) contents, and bulk density were estimated for 0.5 Myr time intervals from 0 to 14 Ma and for 1 Myr time intervals from 14 to 25 Ma using mostly data from Initial Reports volumes. There is surprisingly little coherence between CaCO (sub 3) MAR time series from different Pacific regions, although regional patterns exist. A transition from high to low CaCO (sub 3) MAR from 23-20 Ma is the only event common to the entire Pacific Ocean. This event is found worldwide. (mod. journ. abst.)
English
Serial
Coverage:Geographic coordinates:
North:0.2955
West:-180.0000East: 180.0000
South:-90.0000
Stratigraphy; biochemistry; bulk density; calcium carbonate; carbon; carbon cycle; carbonate compensation depth; carbonates; Cenozoic; cores; Deep Sea Drilling Project; depositional environment; DSDP Site 573; geochemical cycle; geochemistry; hydrochemistry; IPOD; Leg 85; lower Miocene; marine sediments; mass accumulation rates; mass balance; Miocene; models; Neogene; Ocean Drilling Program; Pacific Ocean; paleo-oceanography; paleoenvironment; sedimentation rates; sediments; Southern Ocean; Tertiary;
.