D. W. Collinson

Newcastle University

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A. Stephenson

Newcastle University

S. K. Runcorn

Newcastle University

R. B. Hargraves

Thor Technologies (United States)

Cary R. Spitzer

Langley Research Center

R. E. Arvidson

Washington University in St. Louis

S. J. Morden

Newcastle University

A. B. Verchovsky

The Open University

H. J. Milledge

University College London

C. T. Pillinger

The Open University

M. P. Maslanyj

British Antarctic Survey

Cooperative Institutions

Newcastle University

Planetary Science Institute

University College London

The Open University

Newcastle upon Tyne Hospital

Hong Kong Metropolitan University

V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry

University of Edinburgh

Max Planck Institute for Chemistry

Lunar and Planetary Institute

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Investigations into the Stable Remanent Magnetization of Sediments

Geophysical Journal International (1969)

D. W. Collinson

Following the previously described investigations into the magnetic constituents and bulk magnetic properties of red sandstones, the data acquired are examined in relation to the origin and nature of the stable remanent magnetization of these rocks. Based on estimates of haematite content, there is evidence that only a small proportion of the haematite present carries the remanence, the remainder being only weakly magnetized or unmagnetized. The origin of the wide variation in remanent intensity observed in red sediments is also discussed.

Natural remanent magnetization

Rock magnetism

10.1111/j.1365-246x.1969.tb03563.x

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Citations (11)

A review of lunar paleointensity data and implications for the origin of lunar magnetism

Journal of Geophysical Research Atmospheres (1983)

S. M. Cisowski D. W. Collinson S. K. Runcorn A. Stephenson M. Fuller

The saturation remanence normalization method of paleointensity estimation has been applied to more than 50 lunar samples, and has been calibrated in terms of standard intensity determinations done on 14 samples. These results suggest that a lunar surface field, comparable in intensity to the earth's magnetic field, existed from about 3.6 to 3.8 AE. Absolute paleointensity estimates and lunar surface field strength determinations are consistent with this observation. The data presented here differ from previous descriptions of the variation in the lunar field with time in that (A) the oldest samples (>3.9 AE) are among the most weakly magnetized; and (B) an order of magnitude drop in paleointensity is suggested between the time of extrusion of the Apollo 11 low and high potassium basalts. The limited range in age of the strongly magnetized lunar samples and the absence of shocked samples in this set argues against a solar source for the lunar paleofield or for fields arising from transient phenomena such as impacts. The coincidence of this high field era with the termination of basin forming impacts and the beginning of mare basalt extrusion suggests a common cause. A close approach of the moon to the earth at about 3.8 AE might account for all three phenomena. The confined duration of the strong lunar field may allow for the assignment of relative ages for certain lunar samples and surface features.

Lunar mare

10.1029/jb088is02p0a691

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Citations (96)

Physical principles of remote sensing

Physics of The Earth and Planetary Interiors (1991)

D. W. Collinson

10.1016/0031-9201(91)90165-e

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Citations (71)

Magnetic Properties of Antarctic Shergottites EETA 79001 and ALHA 77005

Meteoritics and Planetary Science (1985)

D. W. Collinson

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High- and low-temperature measurements

Springer eBooks (1983)

D. W. Collinson

Superparamagnetism

Magnetism

10.1007/978-94-015-3979-1_4

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Do the Ubangui Diamonds Originate from a Giant Impact

Metic (1994)

DI Shelkov H. J. Milledge A. B. Verchovsky R. Hutchison D. W. Collinson

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Citations (1)

Geomagnetism

Physics of The Earth and Planetary Interiors (1989)

D. W. Collinson

10.1016/0031-9201(89)90108-8

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Magnetic Properties of Lunar Samples

Science (1970)

S. K. Runcorn D. W. Collinson W. O’Reilly A. Stephenson N. N. Greenwood

The magnetic properties of samples of rock, fines, and magnetic separate from the fines from Apollo 11 have been measured. Native iron, or possibly nickel-iron, of submicroscopic particle size is the most important constituent, with minor contributions from ilmenite, paramagnetic iron minerals, and other iron-titanium oxides. The remanent magnetization of a sample of the micro-breccia rapidly acquires a viscous magnetization and does not appear to have a significant stable remanence. The crystalline sample has a weak natural remanence showing some stability.

Ilmenite

Rock magnetism

Natural remanent magnetization

Breccia

Magnetism

10.1126/science.167.3918.697

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Citations (41)

An investigation of the scattered remanent magnetization of the Dunnet Head sandstone

Geophysical Journal International (1980)

D. W. Collinson

The directions of remanent magnetism of samples of the Dunnet Head sandstone from Scotland are very scattered on a scale down to a few millimetres, although an overall mean direction is reasonably well defined. The scattered directions show considerable stability against thermal demagnetization and there is evidence that haematite pigment is an important carrier of the remanence. It is concluded that the origin of the inhomogeneous magnetization is a disturbed ambient field during acquisition of chemical remanence by the pigment.

Rock magnetism

Natural remanent magnetization

10.1111/j.1365-246x.1980.tb04863.x

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Citations (7)

Further investigations into lunar palaeointensity determinations

Physics of The Earth and Planetary Interiors (1987)

S. K. Chowdhary D. W. Collinson A. Stephenson S. K. Runcorn

Troilite

10.1016/0031-9201(87)90137-3

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Citations (10)