Origin of magnetization in lunar breccias - an example of thermal overprinting

Details Origin of magnetization in lunar breccias - an example of thermal overprinting Origin of magnetization in lunar breccias - an example of thermal overprinting

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978e%26psl..38..373g&link_type=abstract

Earth and Planetary Science Letters, vol. 38, no. 2, Feb. 15, 1978, p. 373-384. Research supported by the National Research Cou

Mathematics

Logic

1

Breccia, Demagnetization, Lunar Evolution, Lunar Rocks, Magnetization, Temperature Effects, Apollo 17 Flight, Lunar Exploration, Lunar Geology, Mineralogy, Moon, Apollo 17, Station 6, Samples, Lunar, 76015, 76255, 76275, 76315, 76215, 76295, 76307, Boulders, Magnetic Properties, Breccias, Thermal History, Magnetization, Origin

Scientific paper

Twenty six samples from seven hand specimens, collected from the station 6 boulder at the Apollo 17 landing site, were studied magnetically. The boulder is a breccia consisting of three lithologic units distinguished by their clast population. The direction of magnetization of samples from unit B which is almost devoid of large clasts cluster fairly well after alternating field demagnetization. Samples from unit C which is characterized by abundant large clasts up to 1 m in size do not contain a uniform direction of magnetization but the distribution is not random. Based on these data we propose that the natural remanent magnetization (NRM) in these breccias is the vector sum of two magnetizations, a pre-impact magnetization and a partial thermoremanence acquired during breccia formation. The relative contribution of the two components is controlled by the thermal history of the ejecta, which in turn is determined by its clast population. Depending on the clast population, the NRM can be a total thermoremanence, a partial thermoremanence plus a pre-impact magnetization, or a pre-impact magnetization. This model of thermal overprinting might be applicable to all lunar breccias of medium and higher metamorphic grade.

Affiliated with

Also associated with

No associations

Rating

Origin of magnetization in lunar breccias - an example of thermal overprinting does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Origin of magnetization in lunar breccias - an example of thermal overprinting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Origin of magnetization in lunar breccias - an example of thermal overprinting will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1034744