(Table 1) Interstitial water chemistry at DSDP Leg 78A Holes

Studies of interstitial water carried out during Deep Sea Drilling Project Leg 78A (Sites 541, 542, and 543) have revealed that alteration of volcanic material dispersed in the sediments is largely responsible for increased concentrations of dissolved calcium and decreased concentrations of dissolve...

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Bibliographic Details
Main Authors: Gieskes, Joris M, Elderfield, Henry, Lawrence, James R, LaKind, Judy
Format: Dataset
Language:English
Published: PANGAEA 1984
Subjects:
78-541
78-542
78-542A
78-543
78-543A
Alkalinity
total
Ammonium
Calcium
Chlorine
Comment
Deep Sea Drilling Project
Depth
bottom/max
sediment/rock
top/min
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Elevation of event
Event label
Glomar Challenger
Latitude of event
Leg78
Leg78AB
Lithium
Longitude of event
Magnesium
North Atlantic/CONT RISE
North Atlantic/RIDGE
pH
Potassium
Salinity
Sample code/label
see reference(s)
Silicon
Strontium
Strontium-87/Strontium-86 ratio
Sulfate
δ18O
water
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.808782
https://doi.org/10.1594/PANGAEA.808782
Description
Summary:Studies of interstitial water carried out during Deep Sea Drilling Project Leg 78A (Sites 541, 542, and 543) have revealed that alteration of volcanic material dispersed in the sediments is largely responsible for increased concentrations of dissolved calcium and decreased concentrations of dissolved magnesium and potassium. This conclusion is supported by studies of the 87Sr/86Sr ratio of dissolved strontium, as well as by studies of the oxygen isotopic composition of interstitial waters. At Site 543 a large part of the d18O decrease in the interstitial waters must result from diffusive exchange with underlying basement rocks. Data from studies of interstitial water do not indicate upward advection of fluids at Sites 541 and 542.

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