Results 71 to 80 of about 1,435 (177)

Fluctuations of sea-water chemistry during Gargasian (Middle Aptian) time. Data from trace-element content (Mg, Sr, Mn, Fe) in hemipelagic carbonates from La Marcouline Quarry (Cassis, SE France)

Carnets de Géologie, 2007
In the Lower Aptian historical stratotype area (Cassis-La Bédoule, SE France), a geochemical study of the Gargasian (Middle Aptian) marl-limestone alternations of the La Marcouline quarry complements data already obtained from Bedoulian (Early Aptian ...
TRONCHETTI Guy, EMMANUEL Laurent, BELTRAN Catherine, MOULLADE Michel, RENARD Maurice, RAFELIS Marc de   +5 more
doaj  

Microfacies of a Lower Cretaceous marine successions in Cerro Las Conchas, Sonora, Mexico

Revista Mexicana de Ciencias Geológicas, 2019
The upper Aptian-middle Albian marine sequence exposed in the Cerro Las Conchas is clearly upside down, being the middle Albian rocks in the topographic base of the sequence, while the upper Aptian is in the upper part of the section.
Rogelio Monreal-Saavedra
doaj  

The Cogollo Group and the oceanic anoxic events 1a and 1b, Maracaibo basin, Venezuela

Brazilian Journal of Geology
Carbonates of Cogollo Group (Apón, Lisure and Maraca formations) constitute the broader calcareous platform system originated during Aptian and Albian of Cretaceous in north-western South America, Maracaibo Basin, Venezuela.
José Alejandro Méndez Dot, José Méndez Baamonde, Dayana Reyes, Rommel Whilchy   +3 more
doaj   +1 more source

Glomospirella cantabrica n. sp., and other benthic foraminifera from Lower Cretaceous Urgonian-type carbonates of Cantabria, Spain: Biostratigraphic implications

Geologica Acta, 2016
A new benthic foraminifer is described as Glomospirella cantabrica n. sp. from several sections of the upper Aptian Reocín Formation and one occurrence from the lowermost Albian Las Peñosas Formation of Cantabria (northern Spain). It represents a rather
F. SCHLAGINTWEIT, I. ROSALES, M. NAJARRO
doaj  

Speculative petroleum systems of the Punta del Este Basin (offshore Uruguay)

Brazilian Journal of Geology
: The Uruguayan continental margin was generated as the result of the breakup of Gondwana and, later, the opening of the South Atlantic Ocean, which began in the Jurassic.
Ethel Morales, Hung Kiang Chang, Matías Soto, Gerardo Veroslavsky, Bruno Conti, Héctor de Santa Ana, Fernando Santos Corrêa   +6 more
doaj   +1 more source

CHALLENGES IN ORBITOLINID IDENTIFICATION AND BIOSTRATIGRAPHIC CONSEQUENCES: AN APTIAN EXAMPLE

Acta Palaeontologica Romaniae
The much-cited importance of Orbitolinidae in biostratigraphy depends on the species and time-interval under consideration. In any case, correct species identification is of primary importance as the basis for drawing conclusions. This task is best achieved in an assemblage where centered sections (axial and transverse) showing all details of the ...
openaire   +2 more sources

Sedimentary evolution of an Aptian syn-rift carbonate system (Maestrat Basin, E Spain): effects of accommodation and environmental change

Geologica Acta, 2010
We report an integrated study of an expanded and relatively complete syn-rift continental to epeiric marine succession of Aptian age, cropping out in the western Maestrat Basin (eastern Iberian Chain).
T. BOVER ARNAL, J.A. MORENO BEDMAR, R. SALAS, P.W. SKELTON, K. BITZER, E GILI FOLCH   +5 more
doaj  

110-million-years-old fossil suggests early parasitism in shrimps. [PDF]

Sci Rep, 2023
Lima D, Alencar DR, Santana W, Oliveira NC, Saraiva AÁF, Oliveira GR, Boyko CB, Pinheiro AP.   +7 more
europepmc   +1 more source

The first sauropod dinosaur from the Lower Cretaceous Khok Kruat Formation of Thailand enriches the diversity of somphospondylan titanosauriforms in southeast Asia. [PDF]

Sci Rep
Sethapanichsakul T, Khansubha SO, Manitkoon S, Hanta R, Mannion PD, Upchurch P.   +5 more
europepmc   +1 more source