Also known as Mandacaru borehole

Where: Maranhao, Brazil (2.6° S, 42.8° W: paleocoordinates 7.1° S, 13.7° W)

• coordinate stated in text

When: Zone I, Reyrea polymorphus pollen zone, Early/Lower Albian to Early/Lower Albian (112.0 - 105.3 Ma)

• The interpretation of the Schlumberger logs by

•PETROBRAS is apparently of a provisional character

•and shows many questional formation and member

•subdivisions. For these reasons these lithologic units

•are not used in order to avoid confusion with

•those established and published by PAMPLONA (1971).

Environment/lithology: terrestrial; lithified, argillaceous shale and lithified, argillaceous sandstone

Size class: microfossils

Preservation: soft parts, original sporopollenin

Collection methods: chemical, hydrochloric, hydroflouric, sieve

Primary reference: G. F. W. Herngreen. 1975. Palynology of the Middle and Upper Cretaceous strata in Brazil. Medelingen Rijks Geologische Dienst, Nieuwe Serie 26:39-91 [C. Jaramillo/G. Doria/A. Cardenas ]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 144235: authorized by Carlos Jaramillo, entered by Gabriela Doria on 02.05.2013

Creative Commons license: CC BY (attribution)