Show simple item record

dc.contributor.authorLizárraga M Mendiola, Liliana Guadalupeen_US
dc.date.accessioned2013-11-04T22:02:44Z
dc.date.available2013-11-04T22:02:44Z
dc.date.issued2013en_US
dc.identifier.citationLizárraga, L. Hernández, J. Ángeles, S.es
dc.identifier.urihttps://repository.uaeh.edu.mx/bitstream/handle/123456789/8025
dc.description.abstractThe present paper documents the presence of elements such as isolated crystals, framboids and teeth and socket structures in samples of iron oxides collected from macrofossils from the Upper Cretaceous (Turonian) Eagle Ford Formation, cropping out in the vicinity of Muzquiz county, at Coahuila state, northeastern Mexico. At this area, the inner shelf Boquillas Formation consists of at least 6 m of interbedded brown-yellowish marlstone of about 7-15 cm thick and occasional decimetric (10-25 cm) beds of grey limestone. Marlstone exhibits a parallel millimetric- scale lamination associated to microbial activity, and occasionally shows iron oxide minerals exposed on nodules with a diameter of about 3 cm and millimetric layers arranged parallel to the stratiphication plane resembling the distribution of sedimentary pyrite in dysoxic/anoxic sediments. Fossils of macroorganisms consist mainly of bivalves, ammonites and fish, and they present several degrees of preservation. Ocassionally, fossils are completely replaced by iron oxides.es
dc.languageeses
dc.subjectDiseño y Construcción Sustentablees
dc.titleMicroscopic evidences of replacement of iron sulfide by iron oxide in macro Fossils: a useful tool for the search of life in mars?es
dc.typeArticlees


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record