Composition and origin of hydrothermal ironstones from central Pacific seamounts

Details Composition and origin of hydrothermal ironstones from central Pacific seamounts Composition and origin of hydrothermal ironstones from central Pacific seamounts

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gecoa..58..179h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 58, Issue 1, pp.179-189

Other

7

Scientific paper

Ironstones recovered from five Late Cretaceous seamounts in the central Pacific region probably formed during late-stage edifice-building volcanism. Ironstones are dense and compact with the appearance of brown chert. The ironstones are characterized by a goethite mineralogy with FeOOH contents up to 88%, extreme fractionation of Fe and Mn, low trace-element and rare earth element abundances, low Co / Zn ratios, and isotopic equilibration temperatures of about 20-45 °C. These characteristics indicate that the ironstones formed from hydrothermal fluids. Ironstones probably formed below the seawater-seafloor interface, as indicated by their occurrence as a proximal hydrothermal deposit, presence of primary goethite cement, pervasive replacement of rocks by goethite, and absence of interbedded pyro-clastic beds.

Affiliated with

Also associated with

No associations

Rating

Composition and origin of hydrothermal ironstones from central Pacific seamounts 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 Composition and origin of hydrothermal ironstones from central Pacific seamounts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition and origin of hydrothermal ironstones from central Pacific seamounts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-868930