Laurent de Verteuil

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

Logging data are measurements of physical properties of the formation surrounding a borehole, acquired in situ after completion of coring (wireline logging) or during drilling (Logging-While-Drilling, LWD). The range of data (resistivity, gamma radiation, velocity, density, borehole images,…) in any hole depends on the scientific objectives and operational constraints.

STRUCTURAL GEOLOGICAL OBSERVATIONS AND GEOCHEMICAL RESULTS OF TWO LATE CRETACEOUS OUTCROPS OF TRINIDAD Laszlo Benkovics, Dewi Jones, Mo Etemadi, Alejandro Franco Laurent de Verteuil, Jose Antonio Gonzalez (2) (1) RepsolYPF, LAN Exploration, Houston (2) Latinum Ltd. In the Central region of Trinidad, West Indies, there are two well known exposed outcrops of Late Cretaceous age. These two units with their distinctive tectonostratigrahic characteristics are separated by a major strike-slip fault system. Geoscientists of the RepsolYPF Trinidad Exploration Unit performed field and geochemical sampling of these outcrops during the first half of 2006. The first outcrop exposes the Naparima Hill Formation in a large quarry at San Fernando Hill. This outcrop is located to the southwest of the Central Range uplift and is interpreted to be a transpressional type positive flower or pop up structure. This interpretation is supported by surface geological observations and the subsurface data from...

... Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, REPIDISCA, seleciona. para imprimir. Fotocópia. Texto completo. Id: 5073. Autor: Verteuil, Laurent de; Stawicki, Alfred W; Hoag, Roland B; Bisson, Robert A; Ingari, Joseph C; Maharaj, Utam S; Mulchansingh, Kerry. ...

Page 1. Geological Society of America Bulletin doi: 10.1130/0016-7606(1998)110< 0231:NTSFTF>2.3.CO;2 1998;110;231-258 Geological Society of America Bulletin Laurent de Verteuil Kevin J. Cunningham, Donald F. McNeill ...

Analysis of upper Miocene open bay fine sandy marls from the Windmill Point beds in Maryland yielded moderately diverse dinocyst assemblages dominated by a single quinqueform species. The new species, Geonettia clineae gen. et sp. nov., is characterized by a resting cyst having fields that all routinely dissociate, revealing a tabulation most similar to fossil Eocladopyxis peniculata Morgenroth 1966 and living Pyrodinium bahamense Plate 1906. Sufficient differences exist in the ventral epitabulation, style of excystment and the wall structure, to warrant separation at the generic level. Geonettia clineae has a known stratigraphic range from upper middle Miocene through upper upper Miocene in the western north Atlantic. Facies analysis and abundance patterns indicate that Geonettia clineae thrived in mesotrophic open embayments having low sediment influx. Species of Eocladopyxis Morgenroth 1966, Geonettia gen. nov., Homotryblium Davey and Williams 1966 and Pyrodinium Plate 1906, ofte...

This report contains the occurrence data for dinoflagellate cysts recorded from 163 samples taken from Sites 902 through 906, during Ocean Drilling Program (ODP) Leg 150. The dinoflagellate cyst (dinocyst) stratigraphy has been presented in Mountain, Miller, Blum, et al. (1994), and was based on these data. This report provides the full dinocyst data set supporting the dinocyst stratigraphic interpretations made in Mountain, Miller, Blum, et al. (1994). For Miocene shipboard dinocyst stratigraphy, I delineated 10 informal zones: preA, and A through I, in ascending stratigraphic order. These zones are defined in Shipboard Scientific Party (1994a), and are based on my studies of Miocene dinocyst stratigraphy in the Maryland and Virginia coastal plain (de Verteuil and Norris, 1991, 1992; de Verteuil, 1995). This zonation has been slightly revised (de Verteuil and Norris, in press, a), and the new formal zone definitions are repeated below. Each new zone has an alpha-numeric abbreviatio...

We examine, for the first time, biogeographic patterns in a series of tropical montane coastal systems in northern South America. We use amphibians and reptiles, which constitute the most critical communities based upon the prevalence of endemic taxa, to assess the region’s biodiversity. The montane coastal system spans an east-west distance of 925 km. It includes peaks ranging from 549 m to 2765 m above sea level and encompasses the montane complexes of northern Venezuela (including Isla de Margarita), an outlier at Santa Marta (Colombia), and ranges on the islands Trinidad and Tobago. The area supports 14 family level amphibian clades and 23 family level reptile clades. Fieldwork, museum specimen surveys, and a literature review suggest that biodiversity decreases at higher elevations. Here we examine the biogeographic patterns in the region to assess the role of the montane systems as possible refugia. We also look at the possible island and sky island effects using data from alt...

STRUCTURAL AND DEPOSITIONAL MODEL FOR THIN, OUTER SHELF, PLIOCENE NCMA GAS RESERVOIRS, OFF THE NORTH COAST OF TRINIDAD, WEST INDIES Laurent de Verteuil, BG Trinidad & Tobago Limited1 Marc Quesnel, BG Trinidad & Tobago Limited1 BG House, 5 St. Clair Avenue, Port of Spain, Trinidad, West Indies The North Coast Marine Area (NCMA), which contains the gas fields of Hibiscus, Chaconia, Poinsettia and Ixora, lie 50 km due north of Port of Spain, Trinidad, and 80 km due west of Crown Point, Tobago, on the northern continental shelf of South America. The fields produce biogenically sourced dry gas, which is transported via pipeline to Atlantic LNG in Point Fortin. Structurally, the NCMA is within the Tobago Trough Basin, a back-arc wrench-affected basin on the southeastern margin of the Caribbean Plate, where it interacts with the South American Plate to the south and the Atlantic Plate to the east. Oblique strain tectonics in the NCMA area has created a northeast trending basement high (par...

We examine, for the first time, biogeographic patterns in a series of tropical montane coastal systems in northern South America. We use amphibians and reptiles, which constitute the most critical communities based upon the prevalence of endemic taxa, to assess the region’s biodiversity. The montane coastal system spans an east-west distance of 925 km. It includes peaks ranging from 549 m to 2765 m above sea level and encompasses the montane complexes of northern Venezuela (including Isla de Margarita), an outlier at Santa Marta (Colombia), and ranges on the islands Trinidad and Tobago. The area supports 14 family level amphibian clades and 23 family level reptile clades. Fieldwork, museum specimen surveys, and a literature review suggest that biodiversity decreases at higher elevations. Here we examine the biogeographic patterns in the region to assess the role of the montane systems as possible refugia. We also look at the possible island and sky island effects using data from alt...

Over the past two decades, extensive seismic mapping of the Baltimore Canyon Trough off New Jersey, Delaware and Virginia, has documented a succession of progradational Miocene stratigraphic sequences. Understanding the depositional timing of these sequences is critical in evaluating the role of eustasy in their development, but has until now been hampered by the lack of suitably high resolution biostratigraphic data. Attempts to produce an integrated Neogene basin history have previously been frustrated by an inability to directly correlate individual shelf-based seismic sequences, with regionally mapped onshore, unconformity-bound, stratigraphic units. This study addresses both problems using data comprising the stratigraphic distribution of dinoflagellate cysts in two composited outcrop and ten subsurface sections from the Salisbury Embayment and adjacent Baltimore Canyon Trough. The result is a detailed age model for the entire Miocene depositional history of the area. Onshore s...