Magnetic properties of oceanic pillow basalts: evidence from Macquarie Island
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چکیده
منابع مشابه
Petrology of some oceanic island basalts: PRIMELT2.XLS software for primary magma calculation
[1] PRIMELT2.XLS software is introduced for calculating primary magma composition and mantle potential temperature (TP) from an observed lava composition. It is an upgrade over a previous version in that it includes garnet peridotite melting and it detects complexities that can lead to overestimates in TP by >100 C. These are variations in source lithology, source volatile content, source oxida...
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ADAMSON, D.A., SELKIRK, P.M., PRICE, D.M., WARD N. & SELKIRK, ].M., 1996 (xi): Pleistocene uplift and palaeoenvitonments of Macquarie Island: evidence from palaeobeaches and sedimentary deposits. In Banks, M.R. & Brown, M.J, (Eds): CLIMATIC SUCCESSION AND GLACIAL HISTORYOF THE SOUTHERN HEMISPHERE OVER THE LAST FIVE MILLION YEARS. Pap. Proc. R. Soc. Tasm. 130(2): 25-32. ISSN 0080-4703. School of...
متن کاملIron isotopic systematics of oceanic basalts
The iron isotopic compositions of 93 well-characterized basalts from geochemically and geologically diverse mid-ocean ridge segments, oceanic islands and back arc basins were measured. Forty-three MORBs have homogeneous Fe isotopic composition, with dFe ranging from +0.07& to +0.14& and an average of +0.105 ± 0.006& (2SD/ p n, n = 43, MSWD = 1.9). Three back arc basin basalts have similar dFe t...
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The recent speculation that the magnetic anomalies observed over oceanic ridges might be explained in terms of ocean-floor spreading and periodic reversals of the earth's magnetic field may now be reexamined in the light of suggested reversals during the past 4 million years and the newly described Juan de Fuca Ridge.
متن کاملGeochemical characterization of oceanic basalts using Artificial Neural Network
The geochemical discriminate diagrams help to distinguish the volcanics recovered from different tectonic settings but these diagrams tend to group the ocean floor basalts (OFB) under one class i.e., as mid-oceanic ridge basalts (MORB). Hence, a method is specifically needed to identify the OFB as normal (N-MORB), enriched (E-MORB) and ocean island basalts (OIB). We have applied Artificial Neur...
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ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 1976
ISSN: 0956-540X,1365-246X
DOI: 10.1111/j.1365-246x.1976.tb01268.x