(Table 2) Chemical composition of quenched glasses from the Mohns and Knipovich Ridges ...

The aim of this project was a petrogeochemical study of igneous rocks in the areas of the Mohns and Knipovich Ridges, both being the northern extensions of the Mid-Atlantic Ridge (MAR), using data available for quenching glass samples collected during Cruises 36 and 38 of R/V Akademic Mstislav Keldy...

Full description

Bibliographic Details
Main Authors: Sushchevskaya, Nadezhda M, Cherkashov, Georgy A, Tsekhonya, T I, Bogdanov, Yury A, Belyatsky, Boris V, Kononkova, N N
Format: Dataset
Language:English
Published: PANGAEA 2000
Subjects:
Event label
Latitude of event
Longitude of event
Elevation of event
Latitude of event 2
Longitude of event 2
Elevation of event 2
Sample code/label
Type
Silicon dioxide
Titanium dioxide
Aluminium oxide
Iron oxide, FeO
Manganese oxide
Magnesium oxide
Calcium oxide
Sodium oxide
Potassium oxide
Phosphorus pentoxide
Water in rock
Sum
MIR-1 deep-sea manned submersible
MIR-2 deep-sea manned submersible
Dredge
CAMECA electron microprobe
Secondary ion mass spectrometry SIMS
Calculated
AMK36
AMK38
PL15
Akademik Mstislav Keldysh
Professor Logachev
Archive of Ocean Data ARCOD
Gakkel Ridge
Knipovich Ridge
Mid-Atlantic Ridge
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.744747
https://doi.pangaea.de/10.1594/PANGAEA.744747
Description
Summary:The aim of this project was a petrogeochemical study of igneous rocks in the areas of the Mohns and Knipovich Ridges, both being the northern extensions of the Mid-Atlantic Ridge (MAR), using data available for quenching glass samples collected during Cruises 36 and 38 of R/V Akademic Mstislav Keldysh and during Cruise 15 of R/V Professor Logachev. Results of igneous rock studying from the Mohns and Knipovich Ridges at the background of evolution of the total North Atlantic Province, which had been identified earlier from tectonic and geophysical data, showed that igneous rocks of the Knipovich Ridge can be ranked as shallow tholeiites, primary melts of which were relatively rich in Na and Si and poor in Fe. This type of magma is characteristic of colder regions of the oceanic lithosphere. Its occurrence in the Knipovich Ridge and its potential propagation up to the Gakkel Ridge suggest that igneous rocks of this region originated under conditions of passive spreading in contrast to the MAR region in ...

Similar Items