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Distribution of major and trace elements in La Luna Formation, Southwestern Venezuelan Basin
Organic Geochemistry, 2002The La Luna Formation (Maraca section), Maracaibo Basin, was studied by means of V and Ni analysis of the bitumen, total organic carbon (TOC), total sulfur (St), major elements (Si, Al, Fe, Mg, Mn, Ca, Ti, Na, K, P), trace elements (V, Ni, Co, Cr, Cu, and Zn), and electron microprobe analysis (EPMA) of the whole rock, and St, major elements (Si, Al, Fe,
S. Mónaco +5 more
semanticscholar +2 more sources
Advances in South American Micropaleontology, 2018
A well site biostratigraphic study was carried out in the Chuira-2 ST-1 well, through the Umir and La Luna Formations in the Middle Magdalena Valley Basin (MMVB), north of Colombia. Results of the calcareous nannofossil analysis are presented and compared to local biozonations for planktonic foraminifera and palinomorphs for La Luna Formation in the ...
J. P. P. Panera +6 more
semanticscholar +2 more sources
A well site biostratigraphic study was carried out in the Chuira-2 ST-1 well, through the Umir and La Luna Formations in the Middle Magdalena Valley Basin (MMVB), north of Colombia. Results of the calcareous nannofossil analysis are presented and compared to local biozonations for planktonic foraminifera and palinomorphs for La Luna Formation in the ...
J. P. P. Panera +6 more
semanticscholar +2 more sources
Campanian Bolivinoides and microfacies from the La Luna Formation, western Venezuela
Marine Micropaleontology, 1995Abstract Tres Esquinas, the upper member of the La Luna Formation, a 1–3 m thick condensed sequence composed of glauconitic phosphorite, signals the commencement of the Late Cretaceous regression in western Venezuela. This is the last of a series of thin phosphatic beds, the others non-glauconitic, occurring in the upper La Luna Formation.
L. Romero, F. Galea-Alvarez
semanticscholar +2 more sources
Chemical Geology, 1996
Bulk and molecular geochemical, micropalaeontological, and carbon-isotopic data are used to address the different local and global factors influencing the environment of sedimentation of the La Luna Formation (Cenomanian-Campanian, approximate palaeolatitude 15°N) in a single section in western Venezuela.
Julio Perez-Infante +2 more
semanticscholar +3 more sources
Bulk and molecular geochemical, micropalaeontological, and carbon-isotopic data are used to address the different local and global factors influencing the environment of sedimentation of the La Luna Formation (Cenomanian-Campanian, approximate palaeolatitude 15°N) in a single section in western Venezuela.
Julio Perez-Infante +2 more
semanticscholar +3 more sources
PALAIOS, 2003
Earth’s past includes episodes when environments in much of the ocean were very different from those of today. One of these episodes, that has enormous economic repercussions, occurred in the mid-Cretaceous between ∼80–125 Ma, and led to deposition of organic carbon (Corg)-rich sediments, informally known as “black shales,” over large regions of the ...
T. Bralower, M. Lorente
semanticscholar +2 more sources
Earth’s past includes episodes when environments in much of the ocean were very different from those of today. One of these episodes, that has enormous economic repercussions, occurred in the mid-Cretaceous between ∼80–125 Ma, and led to deposition of organic carbon (Corg)-rich sediments, informally known as “black shales,” over large regions of the ...
T. Bralower, M. Lorente
semanticscholar +2 more sources
Chemical Geology, 1999
Abstract Two proposed source-rock sequences in the Lower (Aptian–Albian) and the Upper (Cenomanian–Campanian) Cretaceous sediments of the Perija Range, Maracaibo Basin, were geochemically analyzed in order to find environmentally controlled characteristic fingerprints.
M. Alberdi-Genolet, R. Tocco
semanticscholar +2 more sources
Abstract Two proposed source-rock sequences in the Lower (Aptian–Albian) and the Upper (Cenomanian–Campanian) Cretaceous sediments of the Perija Range, Maracaibo Basin, were geochemically analyzed in order to find environmentally controlled characteristic fingerprints.
M. Alberdi-Genolet, R. Tocco
semanticscholar +2 more sources
Proceedings of the 2nd Unconventional Resources Technology Conference, 2014
La Luna Formation is known as one of the most prolific source rocks in the northern Andes and worldwide. However, despite this proven potential and the increasing interest in La Luna Fm. as an unconventional play the regional sequence-stratigraphic framework and its depositional system remain poorly understood.
H. Galvis-Portilla +12 more
semanticscholar +2 more sources
La Luna Formation is known as one of the most prolific source rocks in the northern Andes and worldwide. However, despite this proven potential and the increasing interest in La Luna Fm. as an unconventional play the regional sequence-stratigraphic framework and its depositional system remain poorly understood.
H. Galvis-Portilla +12 more
semanticscholar +2 more sources
Fuel, 2002
High-resolution mass spectrometry indicates that the isotopic abundance of (50)vanadium (V) of the Late Cretaceous La Luna petroleum asphaltenes and related source kerogens of marine origin (both highly enriched with V GT 2000 ppm) is higher by about 3.5% than that of inorganic source (VOSO4.5H(2)O, Merck).
P. Premović
semanticscholar +4 more sources
High-resolution mass spectrometry indicates that the isotopic abundance of (50)vanadium (V) of the Late Cretaceous La Luna petroleum asphaltenes and related source kerogens of marine origin (both highly enriched with V GT 2000 ppm) is higher by about 3.5% than that of inorganic source (VOSO4.5H(2)O, Merck).
P. Premović
semanticscholar +4 more sources
Sedimentary Geology, 1996
Abstract The Late Cretaceous La Luna Formation is the main hydrocarbon source-rock formation in Venezuela. In the Lake Maracaibo area, the formation shows a steep maturation gradient affecting sedimentary organic matter (OM) and clay minerals, related to local burial history and thrusting events.
Thierry Mongenot +4 more
semanticscholar +2 more sources
Abstract The Late Cretaceous La Luna Formation is the main hydrocarbon source-rock formation in Venezuela. In the Lake Maracaibo area, the formation shows a steep maturation gradient affecting sedimentary organic matter (OM) and clay minerals, related to local burial history and thrusting events.
Thierry Mongenot +4 more
semanticscholar +2 more sources
Organic carbon and phosphate distributions in the La Luna Formation, Western Venezuela
AAPG Bulletin, 1996The Upper Cretaceous La Luna Formation in Western Venezuela is believed to be the major source rock in the Maracaibo basin. In order to obtain an approximation of the total amount of hydrocarbons that could have possibly been generated in this basin, the vertical and areal distribution of total organic carbon (TOC) was studied.
P. S. Stoufer, W. Scherer
semanticscholar +2 more sources