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Minerais de ferro do Ordovícico Inferior do Anticlinal de Valongo

Title

Minerais de ferro do Ordovícico Inferior do Anticlinal de ValongoExport publication in the APA format Export publication in the EXCEL format Export publication in the RIS format

Type

Article in National Scientific Journal

Date

2011

Title

Minerais de ferro do Ordovícico Inferior do Anticlinal de Valongo

Type

Article in National Scientific Journal

Year

2011

Authors

H. Couto

(Author)

FCUP

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Journal

Title: Rev i s t a Electrónica de Ciências da Terra Search for Journal Publications

Vol. 20 No. 4

Publisher: GEOTIC – Sociedade Geológica de Portuga/ VIII Congresso Nacional de Geologia

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Abstract (EN): The Lower Ordovician oolitic ironstones of Valongo anticline have abundant chamosite and/or siderite. True oolites are rare in the studied levels. Some pseudo-oolites are related to the presence of algae, as evidenced by cathodoluminescence. Iron came from emerged areas and deposited during transgression of Early Ordovician, in a shallow platform protected by barriers, with exhalativesedimentary vent in reducing environment rich in organic matter

Language: Portuguese

Type (Professor's evaluation): Scientific

Notes: KEYWORDS: Oolitic ironstone, chamosite, siderite, algae

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