|Series||Canada Earth Physics Branch Contributions -- 304|
|Contributions||Irving, E., Park, J.K., Haggerty, S.E.|
The oceanic crust (made of basalts) is formed on mid-ocean ridges. MORB = Mid-Ocean Ridge Basalt. This is the main site of volcanic activity on Earth, and the most abundant igneous rock! But most of it is underwater Occasionally, slivers of oceanic crust are tectonically emplaced on continents (in convergence zone): ophiolites. MAGNETIC STUDY OF BASALTS FROM THE MID-ATLANTIC RANGE, LAT 37 DEGREES N [Johnson, H Paul & Atwater, Tanya] on *FREE* shipping on qualifying offers. MAGNETIC STUDY OF BASALTS FROM THE MID-ATLANTIC RANGE, LAT 37 DEGREES NAuthor: Tanya Johnson, H Paul & Atwater. K, Rb, Ba, Sr, Y, Zr and Nb have been determined in samples of MORB (mid-ocean ridge basalt) from the mid-Atlantic ridge at 45 °N by X-ray fluorescence spectrometry. This suite is characterised by higher concentrations of K, Rb, Ba and Nb (and lower K/Rb, K/Ba and Zr/Nb) than low-K tholeiites (typical MORB) previously described in the by: OPAQUE MINERALOGY OF ALTERED BASALTS FROM HOLE A OF IPOD LEG 51 Daniel Plasse, Department of Geology, Dalhousie University, Halifax, Nova Scotia B3H 3J5, Canada OPAQUE MINERALOGY The magnetic minerals of the basalts from Hole A are Irving, E., The Mid-Atlantic Ridge at 45°N, XIV. Oxida-tion and magnetic properties of.
Magnetic Properties of Mid-Ocean-Ridge Basalts from Ocean Drilling Program Leg Leg were studied using rock magnetism, mineralogy, E., The Mid-Atlantic Ridge a t 45°N. XIV. minor opaque oxides is required to account for the compositions of for much of the chemical variation encountered in the ridge, fracture zone and island basalts investigated in this study by fractional crystallisation processes. MID-ATLANTIC RIDGE AT 36°49'N - FAMOUS Introduction 2. Geological Setting l. xi 1 1 3 5 5 5 5 6 8 8 Studies of volcanic rocks in dredge hauls from the submerged parts of the Mid-Atlantic Ridge suggest that it consists largely of tholeiitic basalt with low values of K, Ti, and P. In contrast, the volcanic islands which form the elevated caps on the Ridge are built of alkali basalt with high values of Ti, Fe3+, P, Na, and K. This distinct correlation between the form of the volcanic structures. PDF | On Oct 1, , K. N. Shatagin and others published Sr-Nd isotopic heterogeneity of basalts of the Sierra Leone test site, mid-Atlantic ridge, 5 degrees-7 degrees S | Find, read and cite all.
The average NRM of pillow basalts in middle latitudes measured by Marshall and Cox () is between and e.m.u., and should be less for slowly-cooling massive dikes of same composition. Irving et al. () studied the magnetic properties of 38 fresh specimens of basalt collected across the Mid-Atlantic Ridge at latitude 45"N. 1. Science. Jun 12;() Composition of Basalts from the Mid-Atlantic Ridge. Engel AE, Engel CG. Studies of volcanic rocks in dredge hauls from the submerged parts of the Mid-Atlantic Ridge suggest that it consists largely of tholeiitic basalt with low values of K, Ti, and by: Earth and Planetary Science Letters, 36 () Elsevier Scientific Publishing Company, Amsterdam - Printed in The Netherlands  PETROGENESIS OF BASALTS FROM THE FAMOUS AREA: MID-ATLANTIC RIDGE C.H. LANGMUIR, J.F. BENDER, A.E. BENCE, G.N. HANSON Department of Earth and Space Sciences, State University of New York, Stony Brook, N. Y. Cited by: Examples of bathymetry available from the software GeoMapApp. (A) A region of the Mid-Atlantic Ridge (36°–37°N) with high-quality, multi-beam bathymetry [Cannat et al., ; Escartin et al., ]. (B) A region of the Central Indian Ridge (14°–16°S) where only satellite bathymetry is .