Miocene carbonate buildups offshore Socialist Republic of Vietnam

Mayall, Mike; Bent, Allen H.; Roberts, David

doi:10.1144/gsl.sp.1997.126.01.09

Cited by 16 publications

(17 citation statements)

References 1 publication

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“…Nevertheless, other Miocene Australasian platforms contain strong sedimentologic and stable-isotopic evidence of diagenesis caused by repeated subaerial exposure (Epting, 1980;Grange & Davies, 1985;Dolan & Hermany, 1988;Mayall & Cox, 1988;Jordan & Abdullah, 1992;Moldovanyi et al, 1995;Park et al, 1995;Mayall et al, 1997;Wilson & Evans, 2002;Fournier et al, 2004;Heubeck et al, 2004;Vahrenkamp et al, 2004). As in the Oligocene platforms studied by Saller et al (1993) and Saller & Vijaya (2002), the simplest and most plausible explanation for the absence of evidence for subaerial exposure in the Marion platforms may be that the platforms did not experience significant exposure.…”

Section: Involvement Of Meteoric Watermentioning

confidence: 99%

Porosity–permeability relationships in Miocene carbonate platforms and slopes seaward of the Great Barrier Reef, Australia (ODP Leg 194, Marion Plateau)

Ehrenberg¹,

Eberli

Baechle

2006

Sedimentology

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This paper reports a series of 700 porosity–permeability analyses and supporting petrographic and sedimentologic descriptions from Early to Late Miocene carbonate strata cored on the Marion Plateau, offshore from north‐eastern Australia, during Ocean Drilling Program (ODP) Leg 194. The samples analysed are not only mainly coarse bioclastic limestones and dolomitized equivalents from platform‐top facies, but also include 79 plugs from deeper‐water slope to hemipelagic drift facies. Outstanding characteristics of this data set are the wide ranges of porosity and permeability in both limestones and dolostones, the large degree of short‐range heterogeneity typical of these strata, and the better porosity–permeability correlation of dolostones than limestones. The platforms have experienced widely varying calcite cementation, dolomitization and dissolution but show little clear evidence of meteoric diagenesis, suggesting that subaerial exposure may have played little role in porosity–permeability evolution. Permeability‐for‐given‐porosity is controlled by grain size and calcite cement content in grainstones and by occurrence of larger shelter pores and vugs in mud‐rich samples. Dolomitization tends to reduce the variation of permeability‐for‐given‐porosity by recrystallizing mud matrix to form intercrystalline macroporosity that connects vugs and moulds to become integrated with the effective pore system. As a result, there are no differences in permeability–porosity trends for different dolostone textures, whether dominated by intercrystalline, vuggy, or preserved intergranular pore types. Two platform‐top sites separated by only 5 km display a major lateral variation in dolostone porosity–permeability characteristics within the youngest dolostone units. This difference is interpreted as reflecting a relatively ‘windward’ (current‐facing) setting of the site with the overall higher permeability‐for‐given‐porosity (Site 1199) that led to less muddy depositional facies, greater cementation, and lesser grain dissolution. Pore‐geometry parameters measured by petrographic image analysis confirm that the ‘windward’ dolostones have pores that are both larger and less intricate than dolostones comprising the more current‐protected location.

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Section: Involvement Of Meteoric Watermentioning

confidence: 99%

Porosity–permeability relationships in Miocene carbonate platforms and slopes seaward of the Great Barrier Reef, Australia (ODP Leg 194, Marion Plateau)

Ehrenberg¹,

Eberli

Baechle

2006

Sedimentology

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“…During the Tertiary, extensive tropical shallow-water carbonates, were deposited in the tectonically complex region of the South China Sea (SCS) and adjacent areas (Epting, 1980;Wilson, 2002). The development of Oligocene-Miocene carbonate systems in South-East Asia has been studied from seismic and outcrop data, with special emphasis on third-order depositional sequences (Epting, 1989;Cucci and Clark, 1993;Sun and Esteban, 1994;Mayall et al, 1997;Wilson and Evans, 2002;Grötsch and Mercadier, 1999;Wilson et al, 1999Wilson et al, , 2000Kusumastuti et al, 2002;Saller and Vijaya, 2002;Wilson, 2002;Fournier et al, 2004;Wannier, 2009). The architecture and evolution of carbonate platforms have been determined for most continental margins throughout the world.…”

Section: Introductionmentioning

confidence: 99%

Seismic characteristics and development of the Xisha carbonate platforms, northern margin of the South China Sea

Fuliang³

et al. 2011

Journal of Asian Earth Sciences

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“…Similar laterally extensive platform interior carbonates offshore Vietnam were tested and found to have low porosity (Ͻ15%) and permeability due to pervasive compaction (Mayall et al, 1997). Likewise in China, the Miocene bank interior carbonates showed low porosities on drowned platforms, which had not experienced subaerial exposure prior to drowning (Erlich et al, 1990).…”

Section: Discussionmentioning

confidence: 95%

Seismic sequence analysis and reservoir potential of drowned Miocene carbonate platforms in the Madura Strait, East Java, Indonesia

Kusumastuti¹,

Rensbergen

Warren

2002

Bulletin

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A B S T R A C TSeismic analysis of four Miocene carbonate buildups (the Porong, KE-11C, and BD buildups) in the Madura Strait region, Indonesia, shows that they are constructed of four seismic units (1-4). All the buildups are located atop an east-west-trending Oligocene fault block, which, through its uplift, favored the deposition and aggradation of shoal-water carbonates. Aggradation, platform narrowing, and backstepping of leeward reefs into the upper parts of individual buildups typify the growth profiles. Adjacent offbuildup sedimentary rocks, deposited at the same time as the buildups, show clear horizontal onlap relationships. In combination, these observations imply that all the platforms were drowned. The uppermost parts (unit 4) of each of four major drowned buildups in the trend have been drilled to test for the presence of hydrocarbons. An analysis of the drilling results, in combination with our seismic analysis, shows that those buildups that have relatively high levels of hydrocarbons have suitable trap configurations but lack seal integrity. For example, compactionally induced strain and gravitational gliding created leaky collapse-graben faults (extensional structures) atop some buildups (Porong, KE-11C), which allowed hydrocarbons to drain. Likewise, the updip inclination of some potential seal beds facilitated leakage (KE-11E).In terms of potential targets in similar drowned buildups in the region, higher priority should be given to targets that (1) show evidence of ongoing platform backstepping and so-called give-up reef growth profiles associated with incipient drowning, (2) contain all four seismic units (units 1-4) in the buildup, (3) lack an extensional collapse graben over the crest of the drowned structure, and (4) demonstrate bed inclinations in the sealing beds that indicate likely closure over the crest of the buildup.

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Miocene carbonate buildups offshore Socialist Republic of Vietnam

Cited by 16 publications

References 1 publication

Porosity–permeability relationships in Miocene carbonate platforms and slopes seaward of the Great Barrier Reef, Australia (ODP Leg 194, Marion Plateau)

Porosity–permeability relationships in Miocene carbonate platforms and slopes seaward of the Great Barrier Reef, Australia (ODP Leg 194, Marion Plateau)

Seismic characteristics and development of the Xisha carbonate platforms, northern margin of the South China Sea

Seismic sequence analysis and reservoir potential of drowned Miocene carbonate platforms in the Madura Strait, East Java, Indonesia

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