Reprocessing of deep seismic reflection data from the North German Basin with the Common Reflection Surface stack

Yoon, Misun; Baykulov, Mikhail; Dümmong, Stefan; Brink, Heinz-Jürgen; Gajewski, Dirk

doi:10.1016/j.tecto.2008.05.010

Cited by 13 publications

(9 citation statements)

References 16 publications

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“…Finally, minimum and maximum values fixed at 100 m (0.1 s twt) and 2,000 m (5.0 s twt) for the ZO aperture and at 5 m (0.2 s twt) and 15,000 m (5.0 s twt) for the CMP aperture to get the best coherency section. Similar values for the coherency criteria are also reported for several data sets from different geological provinces (e.g., Yoon et al, 2009). The conventional CMP processing is also carried out using the flow chart (Steps I and III) shown in Figure 2, and a stack section is prepared.…”

Section: Data Processingsupporting

confidence: 78%

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Common Reflection Surface Stack Imaging of the Proterozoic Chambal Valley Vindhyan Basin and Its Boundary Fault in the Northwest India: Constraints on Crustal Evolution and Basin Formation

et al. 2018

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The Vindhyan basin of northwestern and central India is one of the largest undeformed Meso-Neoproterozoic basins in the world with likely potential of hydrocarbons. Crustal seismic reflection data along a 165-km long Chandli-Bundi-Kota-Kunjer profile of the Chambal Valley Vindhyan basin processed using common reflection surface stack method brought out new crustal features, which were missing in earlier images. A gently dipping structure of the basin is imaged with a maximum of 7.5-km thick Proterozoic sediments, 1.5-km thick volcanic sequence, and the granitic basement at 9.0-km depth. The Great Boundary Thrust, a NW dipping crustal-scale regional tectonic feature outcropping at Bundi, and a new NW dipping reflection band from 9-to 30-km depth, named here as the Chambal thrust, are imaged beneath Bundi-Kota segment. Subduction and collision are responsible for evolution of these thrusts implying horizontal crustal growth. Seismic images of compression on one side and extension on another side along with differences in the Moho characteristics and other constraints from geophysical data around Kota indicate the presence of a new tectonic boundary with a strong lateral discontinuity and strike-slip features. The Moho topography is delineated for the first time revealing a crustal thickness ranging from 40 to 44 km. A 9-to 12-km thick mafic underplating at the lower crust suggests an important postcollisional process indicating vertical crustal growth. Based on the images from the present reflection study, a geodynamic model of the region is suggested in a plate tectonic framework, which may apply to similar Paleoproterozoic collisional areas and associated basin formation.

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Section: Data Processingsupporting

confidence: 78%

“…However, only a few applications are also found in the crustal structure and tectonics studies (e.g. Mandal et al, 2014, Mandal et al, 2013, Menyoli et al, 2004, Yoon et al, 2009).…”

Section: Deep Crustal Seismic Reflection Experimentsmentioning

confidence: 99%

Common Reflection Surface Stack Imaging of the Proterozoic Chambal Valley Vindhyan Basin and Its Boundary Fault in the Northwest India: Constraints on Crustal Evolution and Basin Formation

et al. 2018

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“…The CRS stack is a multiparameter stacking technique, which does not depend directly on stacking velocity. Mathematically, the CRS operator can be described as a hyperbolic second‐order Taylor expansion [ Mann et al ., ; Yoon et al ., ], given by

t^{2} (x_{m}, h) = {((), t_{0} + \frac{2 sin normalα}{v_{0}} ((), x_{m} - x_{0}))}^{2} + \frac{2 t_{0} {cos}^{2} α}{v_{0}} [\frac{{(x_{m} - x_{0})}^{2}}{R_{N}} + \frac{h^{2}}{R_{NIP}}]

where h is the half‐offset between the source and the receiver, x m is the source/receiver midpoint, and x 0 is the emergence location of the zero‐offset (ZO) rays at the surface (Figure ). The respective zero‐offset sample to which equation is applied is denoted by P 0 = ( x 0 , t 0 ).…”

Section: Review Of the Crs Stack Methodsmentioning

confidence: 99%

“…Such heterogeneous structures lead to incorrect velocity models of the subsurface. In addition, velocity analysis also becomes difficult due to small source‐receiver offset compared with the target depth in deep crustal seismic reflection data [ Yoon et al ., ]. Inadequate knowledge of deep crustal velocities, including their lateral variations, degrades the effectiveness of the common midpoint stacking method [ Mooney and Meissner , ].…”

Section: Introductionmentioning

confidence: 99%

“…Here, we apply to the CIS reflection data, the common reflection surface (CRS) stacking—a method to simulate a zero‐offset section which can roughly account for local dip variations [e.g., Tygel et al ., ; Müller , ; Jäger et al ., ; Mann , ]. The CRS stack method has been used to process seismic data for hydrocarbon exploration; however, the method has been little used in imaging crustal structure of deep seismic reflection data [e.g., Yoon et al ., ].…”

Section: Introductionmentioning

confidence: 99%

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New seismic images of the Central Indian Suture Zone and their tectonic implications

2013

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[1] The Central Indian Suture (CIS), a mega shear zone, located in the central part of the Indian shield exhibits a complex structure with compositional heterogeneity. Multifold deep seismic reflection data acquired across the shear zone have been previously processed using the conventional common midpoint (CMP) method. In this study, we show results from imaging this shear zone using the common reflection surface (CRS) stack method, an alternative to the CMP stack. Our new images reveal geological features that are either poorly resolved or entirely absent in the earlier CMP stack section. Our major findings include a well-imaged Moho throughout the study area, existence of different crustal blocks each with distinct dipping reflection fabrics on the northern and southern sides of the CIS, a well-defined 8 km of Moho offset beneath the CIS, and a high-amplitude reflective zone representing the CIS. The Moho located at a depth of 48 km in the Bastar craton, to the south of the CIS, is also clearly resolved in our CRS stack, as well as in the time-migrated section. A deeply penetrating crustal-scale imbricated structure imaged up to a depth of 16.0 s two-way time (TWT), to the south of the CIS, suggests that the Bastar craton is subducting toward north. An oppositely dipping reflection fabric, a Moho offset, a positive-negative gravity anomaly pair, and the geological data indicate that the CIS represents a collision zone developed due to the interaction of the Bastar and Bundelkhand cratons with the evolution of the Sausar orogeny at~1000 Ma. This orogeny is contemporaneous with the Grenvillian orogeny and Rodinia assembly. Another thrust fault extending from 4 to 14 s TWT observed to the north of the CIS may represent the earlier, pre-Sausar orogenic activity at 1.6-1.5 Ga. The available seismic characteristics suggest that the CIS, the collisional suture, is also likely to represent a strike-slip fault.

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Dynamics of prolonged salt movement in the Glückstadt Graben (NW Germany) driven by tectonic and sedimentary processes

Warsitzka

Kley

Jähne‐Klingberg

et al. 2016

Int J Earth Sci (Geol Rundsch)

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Reprocessing of deep seismic reflection data from the North German Basin with the Common Reflection Surface stack

Cited by 13 publications

References 16 publications

Common Reflection Surface Stack Imaging of the Proterozoic Chambal Valley Vindhyan Basin and Its Boundary Fault in the Northwest India: Constraints on Crustal Evolution and Basin Formation

Common Reflection Surface Stack Imaging of the Proterozoic Chambal Valley Vindhyan Basin and Its Boundary Fault in the Northwest India: Constraints on Crustal Evolution and Basin Formation

New seismic images of the Central Indian Suture Zone and their tectonic implications

Dynamics of prolonged salt movement in the Glückstadt Graben (NW Germany) driven by tectonic and sedimentary processes

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