Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared

Details Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared

Jul 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998e%26psl.160..147d&link_type=abstract

Earth and Planetary Science Letters, Volume 160, Issue 1-2, p. 147-161.

Computer Science

2

Scientific paper

Photographic coverage of hemipelagic Eocene marls of Angola (Africa), supplemented by limited sampling, shows rhythmic stratification patterns of two types: (a) hierarchically cyclic variation in calcium carbonate/clay ratios forming couplets grouped into bundles at ratios of ca. 5:1; these are coupled with (b) a redox cycle of bottom waters, expressed in darkness of sediment (organic carbon) and variations of the ichnofauna. These patterns resemble those previously observed in the pelagic Albian Scisti a Fucoidi of Italy. Visual study and time-series analysis based on image processing provide ratios compatible with those of Milankovitch theory. Whereas the chronostratigraphic control in Angola does not afford a basis for an independent chronology, the similarity to the Italian Albian supports attribution of these rhythmicities to orbital forcing.

Affiliated with

Also associated with

No associations

Rating

Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared 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 Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital cyclicity in the Eocene of Angola: visual and image-time-series analysis compared will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1344803