Bicaz Gorges, SU II Member (Cretaceous of Romania)

Where: Bicaz Gorges, Romania (47.0° N, 25.9° E: paleocoordinates 26.7° N, 30.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lapos Formation, Late/Upper Berriasian (145.0 - 140.2 Ma)

• Late Berriasian.

• member-level stratigraphic resolution

Environment/lithology: marine; mudstone

• During the Berriasian and early Valanginian, algal nodules varying in size are a remarkable presence between two levels of hardground.
• The member contains micrites showing basal breccias and hardgrounds with cyanophyceean borings. The base displays hardground crossed by borings, overlain by ferruginous crusts, followed by graysh micrites and subordinate pelsparites, suggesting a regressive trend for the sequence. The basal breccias originating from desiccation are made up of micritic intraclasts cemented with sparite-ferrouginous "melt". The basal hardground is interpreted as a marker for the early Berriasian - late Berriasian boundary.

Size classes: macrofossils, mesofossils

Primary reference: O. Dragastan. 2011. Early Cretaceous Foraminifera, Algal Nodules and Calpionellids from the Lapos Valley, Bicaz Gorges (Eastern Carpathians, Romania). Analele Stiintifice ale Universitatii "Al. I. Cuza" - Seria Geologie 57(1):91-105 [W. Kiessling/M. Krause]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 138714: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 26.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Lithocodium
  -
Lithocodium sp. Elliott 1956
Andersenolina
  -
 Biokovinacea - Charentiidae
Dasycladophyceae
 Dasycladales -
Humiella
  -
Rumanoloculina pseudominima
  -
Rumanoloculina pseudominima Bartenstein and Kovatcheva 1982
Foraminferea
 Miliolida - Hauerinidae