Cretaceous-Tertiary ichthyoliths of brown clay intervals

The pattern of ichthyolith distribution established in sequences with stratigraphies based on calcareous or siliceous microfossils is used to provide age correlations for three deep-sea pelagic clay intervals that lack the better known microfossils. At Site 637, approximately 25 m of brown clay in C...

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Bibliographic Details
Main Author: Doyle, P S
Format: Other/Unknown Material
Language:English
Published: PANGAEA 1988
Subjects:
103-637A
103-639C
103-640A
12-118
12-119
40-361
DRILL
Drilling/drill rig
Glomar Challenger
Joides Resolution
Leg103
Leg12
Leg40
North Atlantic/PLAIN
North Atlantic/SEAMOUNT
North Atlantic Ocean
Ocean Drilling Program
ODP
South Atlantic Ocean
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.743850
https://doi.org/10.1594/PANGAEA.743850
Description
Summary:The pattern of ichthyolith distribution established in sequences with stratigraphies based on calcareous or siliceous microfossils is used to provide age correlations for three deep-sea pelagic clay intervals that lack the better known microfossils. At Site 637, approximately 25 m of brown clay in Cores 103-637A-21R through 103-637A-23R underlies upper Miocene sediments and is of Paleocene to early Eocene age. At Site 639, 1.7 m of brown clay in Core 103-639C-2R is Eocene to Oligocene. At Site 640, 3.5 m of clay in Cores 103-640A-1R and 103-640A-2R contains a Cretaceous to Paleocene sequence, with the Cretaceous/Tertiary boundary between 84 and 103 cm in Section 103-640A-2R-1.

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