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Results: 1-25 of 1090

Bight Basin, seismic line 3 Regional Project

VSA Author: Chris Jackson
Scenes: 1
Interpretations: 0
Date Created: 2010-10-29

Another seismic profile from the Bight Basin. See the survey for more information.

Constructing regionals: Pelagian Shelf Interpretation

VSA Author: Rob Butler
Date Created: 2020-10-12

Constructing a "regional" to assist in the interpretation of structural style - in this case normal faults. See outline of workflow in "docs and links" - including link to a video on "regionals"

Moray Firth megasequences Scene

VSA Author: Rob Butler
Interpretations: 2
Date Created: 2020-01-20

The image is used as an interpretation exercise. The profile can be used to develop strategies for building geological interpretations of seismic reflection profiles. Take notes on the interpretation strategies and the order in which you do things.

Triangle zone model for Mackenzie mountain front for AMOCO060-91-10 Interpretation

VSA Author: Adriana Taborda, Deborah Spratt
Date Created: 2008-05-15

The front of the northern Mackenzie Mountains interpreted as a classic triangle zone (beneath the Peel Plateau). The upper detachment is bedding parallel in the shales of the Upper Devonian Imperial Formation.

Salt pillow - North Sea Scene

VSA Author: Rob Butler
Interpretations: 1
Date Created: 2020-01-21

Detail of regional line through Netherlands sector of North Sea - see interpretation....

Visualising seismic data in 3D - Gulf of Mexico 1, West Cameron 1 Regional Project

VSA Author: Alan Roberts
Scenes: 0
Interpretations: 0
Date Created: 2010-03-05

This image shows two seismic probes, within the same 3D data volume, plus an interpreted horizon surface. The probe on the left is a variable amplitude display and normal fault traces can be seen on both vertical surfaces and on the horizontal time-slice. The probe on the right is a coherency display and the fault traces are particularly clear on the horizontal upper surface. The inte...

Basal grooves beneath mass-transport deposits Regional Project

VSA Author: Henry Posamentier
Scenes: 2
Interpretations: 0
Date Created: 2010-06-07

Illuminated horizon draped with time structure (warm colors denote bathymetric highs and cool colors denote bathymetric lows) and associated transverse seismic amplitude section illustrating basal grooves beneath mass-transport deposits within channels. Seismic data courtesy of Western Geophysical. Image presented at the "Frontiers of Seismic Geomorphology" showcase held at the Geolog...

Interpreted salt pillow Interpretation

VSA Author: Rob Butler
Date Created: 2020-01-21

North Sea salt pillow. In this interpretation the "pillow" is considered to be a relict part of the partially migrated mother salt - because it appears to contain a clutter of less mobile units (discontinuous high-amplitude reflectors) that would be residual and jamming up the salt channel . It is welded out to the side. This deflation of salt happened before the labelled unconformity...

Salt tectonics - southern North Sea Interpretation

VSA Author: Rob Butler
Date Created: 2020-01-21

Folds and mini-basins formed in response to movement of underlying salt. In this interpretation the salt was initially deposited in rift basins but has been evacuated as sediment has accumulated (”down-built”) on top. The salt has migrated up the old half-graben margins, forming salt walls and domes together with locally extruding onto the ancestral sea-bed. Subsequent re-migration of...

Reef platform and outliers, time structure map Regional Project

VSA Author: Henry Posamentier
Scenes: 3
Interpretations: 0
Date Created: 2010-06-06

Time structure map of the surface bounding the top of the Kujung 1 carbonate deposits. The southern part of the study area is characterized by a broad carbonate platform topped by reefs ranging from 3 to 5 km diameter. Outlier buildups up to 8 km in diameter are observed to the north and northwest. Image presented at the "Frontiers of Seismic Geomorphology" showcase held at the Geol...

3D perspective of spectral decomposition of interpreted horizon Scene

VSA Author: Gerome Calves
Organization: PeruPetro
Interpretations: 0
Date Created: 2014-12-10

3D perspective of spectral decomposition of interpreted horizon. See associated scenes.

Moray Firth ex interp with geology Interpretation

VSA Author: Rob Butler
Date Created: 2020-01-20

This is an interpretation - fairly basic, picking some main reflectors to illustrate megasequences - see annotated version for further explanation

Simon Stewart's North Sea Diapirs - 2 interpreted Interpretation

VSA Author: Simon Stewart
Date Created: 2008-02-05

This section from the Central North Sea shows a vertical section through a diapir in the region. Salt interpretation filled in pink. Possible onlapping reflector geometry is identified at the crest of the diapir. This diapir was dominated by a phase of increasing and then decreasing salt flow rate relative to sedimentation rate that results in a classic teardrop shaped diapir. The cre...

Mud volcano DW Niger delta annotated Interpretation

VSA Author: Rob Butler
Date Created: 2020-01-20

This annotated version highlights various amplitude anomalies likely to represent hydrocarbons. They include a bottom simulating reflector representing gas hydrates and some bright spots deeper in the structure that could be DHIs - migrated gas. The footwall (R side) of the structure is uninterpreted. Note the thick growth sequence charting amplification of the anticline (in semi-tran...

mud volcano DW Nigeria Interpretation

VSA Author: Rob Butler
Date Created: 2020-01-20

Basic geological picks for the anticline in DW Niger delta - illustrating the growth strata, a thin veneer of post-kinematic strata. The anticline is punctured by mobile mud - that has erupted as a mud-volcano.

Dip map, Sinu prism central, offshore Colombia Regional Project

VSA Author: Rob Butler, Jamie Vinnels
Scenes: 9
Interpretations: 1
Date Created: 2010-01-28

Dip attribute map of the modern seabed, Sinu accretionary prism (offshore Colombia), created from merged bathymetric data. The associated interpretation gives locations for the various section profiles (scenes).

Mud volcano seismic section Scene

VSA Author:
Organization: CGG Veritas
Interpretations: 2
Date Created: 2010-01-13

Vertical 2D profile derived from 3D seismic from the lower Niger fan with an active mud volcano with BSR.

Meddy image GOLR012. Regional Project

VSA Author: Richard Hobbs
Scenes: 1
Interpretations: 1
Date Created: 2010-03-31

Profile shows a cross-section though an anti-cyclonic eddy of warm, saline Mediterranean water formed in cooler, fresher North Atlantic water in the Gulf of Cadiz to the south of Cape St. Vincent, a so-called "Meddy". The reflections are largely determined by the short wavelength changes in temperature with depth. The strong reflectivity over the top of the Meddy is formed by alternat...

The Moray Firth exercise interp annotated Interpretation

VSA Author: Rob Butler
Date Created: 2020-01-20

This is the annotated version - with labelled megasequences and selected structures. Note that the boxed area (R side) is considered to have a high uncertainty - stemming from problems correlating stratal reflectors which are rather discontinuous here.

NW Morocco - profile 1 Regional Project

VSA Author: Rob Butler
Scenes: 0
Interpretations: 0
Date Created: 2008-02-08

Part of the NW Morocco Survey from Fugro.

BR98-92 Scene1 Scene

VSA Author: Steve Thompson
Organization: CGG Veritas
Interpretations: 0
Date Created: 2008-03-28

A detail of the shelf edge clinoforms seen on BR98-92. Browse basin, NW Australia

Western Niger Delta - profile of whole slope Regional Project

VSA Author: Richard Morgan
Scenes: 0
Interpretations: 2
Date Created: 2008-02-04

A regional section down the Western Niger delta - the whole slope. This profile appeared in Morgan, R. (2006) The Niger delta: an active passive margin. Geo Expro 4 (5), p. 36

Slump scars associated with channel levees Regional Project

VSA Author: Henry Posamentier
Scenes: 0
Interpretations: 0
Date Created: 2010-06-06

Plan view of small arcuate slump scars that characterize the inner face of levees bounding a Pleistocene deep-water channel in approximately 2000 m of water in the northeastern Gulf of Mexico. This channel lies approximately 80 m below the sea floor and was characterized by flows from right to left. Colors indicate time structure, with warm colors representing bathymetric highs and co...

Dip map, northern edge of Sinu prism with lower Magdalena Fan Regional Project

VSA Author: Jamie Vinnels, Rob Butler
Scenes: 1
Interpretations: 1
Date Created: 2010-01-28

This is a dip attribute map created from merged bathymetric data from the northern art of the Sinu accretionary prism, offshore Colombia. The northern part of the image shows depositional features of the lower Magdalena fan. See Survey for details of the source etc of this image. The associated scene is 2D seismic profile across the margin.

All Namibian Margin Balancing - overview Interpretation

VSA Author: Rob Butler
Date Created: 2009-08-17

This interpreted section shows arbitrary picks and designation of units in the extensional domain, and two markers in the contractional domain. Note that the vertical exaggeration is approximately 7:1 . assuming a mean seismic velocity of 2.7 km/s. See the scenes for this image for further comments.