A diverse and exquisitely preserved organic-walled microfossil assemblage from the Meso–Neoproterozoic Mbuji-Mayi Supergroup (Democratic Republic of Congo) and implications for Proterozoic biostratigraphy

Baludikay, Blaise Kabamba; Storme, Jean-Yves; François, Camille; Baudet, Daniël; Javaux, Emmanuelle

doi:10.1016/j.precamres.2016.05.017

Cited by 63 publications

(42 citation statements)

References 55 publications

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“…The geochronology of the Mbuji-Mayi Supergroup has been investigated by Cahen (1954), Holmes and Cahen (1955), Delpomdor and Préat (2013), Delpomdor et al (2013b), Baludikay et al (2016a), andFrançois et al (2017). The Supergroup was deposited between ~1155 and ~810 Ma and is divided into the Stenian BI group and the overlying Tonian BII group, each of which is divided into lithostratigraphic subgroups (BIa-e and BIIa-e respectively, Fig.…”

Section: Regional Framework and Stratigraphy Of The Sankuru-mbuji-maymentioning

confidence: 99%

“…Early Neoproterozoic black shales in the BII group of the Mbuji-Mayi Supergroup are the focus of this study. The black shales dominantly contain cyanobacterial and acritarch-derived organic matter (OM) (Maithy, 1975;Baudet, 1987;Baludikay et al, 2016a), together with fungal-derived lagoonal and lacustrine OM (Delpomdor and Préat, 2012;Bonneville et al, 2015). Petrographic studies have indicated the presence of kerogen within the stromatolites of the BIIc subgroup, and degraded bitumen within fractured carbonates in the BII group (Delpomdor and Préat, 2012).…”

Section: Source Rocksmentioning

confidence: 99%

“…The black shales in the BIIc subgroup, with TOC values of 1 wt%, low HI and moderate OI values, have a wide distribution, estimated at 3 x 10 6 km 2 and cover much of the SMLL Basin, probably extending into the southern part of the Congo Basin. The carbonates and black shales in the Mbuji-Mayi Supergroup were deposited between 1000 and 800 Ma (Delpomdor et al, 2013, Baludikay et al, 2016a. Maturation of Type I/II kerogen and primary oil migration is interpreted to have occurred during Lufilian deformation (660-530 Ma; Kipata et al, 2013), while secondary oil migration probably occurred at ~540-480 Ma and may have been related to uplift associated with the paroxysmal phase of Lufilian deformation in the Katanga Basin.…”

Section: Regional Petroleum Potentialmentioning

confidence: 99%

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An Introduction to the Precambrian Petroleum System in the Sankuru‐mbuji‐mayi‐lomami‐lovoy Basin, South‐central Democratic Republic of Congo

Delpomdor

Bonneville

Baert

et al. 2017

Journal of Petroleum Geology

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Section: Regional Framework and Stratigraphy Of The Sankuru-mbuji-maymentioning

confidence: 99%

Section: Source Rocksmentioning

confidence: 99%

Section: Regional Petroleum Potentialmentioning

confidence: 99%

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An Introduction to the Precambrian Petroleum System in the Sankuru‐mbuji‐mayi‐lomami‐lovoy Basin, South‐central Democratic Republic of Congo

Delpomdor

Bonneville

Baert

et al. 2017

Journal of Petroleum Geology

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“…(, ) and Baludikay et al . (), this species is largely, if not exclusively, known from rocks ranging from 1025 ± 40 Ma to c . 720 Ma.…”

Section: Discussionmentioning

confidence: 99%

Biostratigraphic and detrital zircon age constraints on the basement of the Himalayan Foreland Basin: Implications for a Proterozoic link to the Lesser Himalaya and cratonic India

et al. 2016

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The Himalayan Foreland Basin in the Ganga Valley is key to assessing the pre‐collision relationship between cratonic India and the Himalaya – the world's largest mountain chain. The subsurface Ganga Supergroup, representing the sedimentary basement of the Ganga Valley, has been interpreted as a northern extension of the Proterozoic Vindhyan Supergroup in cratonic India. This interpretation is contentious because the depositional age of the Ganga Supergroup is not resolved: whereas the lower Ganga Supergroup is widely regarded as Proterozoic, the upper Ganga Supergroup has been variously inferred to include Neoproterozoic, lower Palaeozoic, or Cretaceous strata. Here, we integrate biostratigraphic and detrital zircon data from drill cores to show that the entire Ganga Supergroup is likely Proterozoic and can be correlated with Proterozoic successions on the northern Indian craton and in the Lesser Himalaya. This helps redefine the first‐order stratigraphic architecture and indicates broad depositional continuity along the northern Indian margin during the Proterozoic.

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“…These studies are improving the characterization of (1) biosignatures and analytical protocols useful for paleobiology and exobiology missions; and of (2) interactions between the biosphere, the geosphere, the hydrosphere, and the atmosphere through time, linking to WPs of the IUAP Planet TOPERS. Important findings include the characterization of some of the earliest microfossils preserved in 3.45 Ga shallow marine environments (Sugitani et al 2015), of biosignatures identification and preservation in microbial mats and cyanobacteria from modern analog extreme environments (Lepot et al 2014;Storme et al 2015), and the diversification of complex life (eukaryotes) in Proterozoic redox-stratified oceans (Beghin et al, in review;Baludikay et al 2016;Javaux and Knoll, 2016). Additionally, we have performed complementary geochronological studies, in particular on diagenetic minerals, to better constrain the age of the microfossils (François et al 2015).…”

Section: Identification and Preservation Of Life Tracers In Early Earmentioning

confidence: 99%

PLANET TOPERS: Planets, Tracing the Transfer, Origin, Preservation, and Evolution of their ReservoirS

Déhant¹,

Asael²,

Baland³

et al. 2016

Orig Life Evol Biosph

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The PLANET TOPERS (Planets, Tracing the Transfer, Origin, Preservation, and Evolution of their ReservoirS) group is an Inter-university attraction pole (IAP) addressing the question of habitability in our Solar System. Habitability is commonly understood as "the potential of an environment (past or present) to support life of any kind" (Steele et al., 2005, http://mepag.jpl.nasa.gov/reports/archive.html). Based on the only known example of Earth, the concept refers to whether environmental conditions are available that could eventually support life, even if life does not currently exist (Javaux and Dehant, 2010, Astron. Astrophys. Rev., 18, 383-416, DOI: 10.1007/s00159-010-0030-4). Life includes properties such as consuming nutrients and producing waste, the ability to reproduce and grow, pass on genetic information, evolve, and adapt to the varying conditions on a planet (Sagan, 1970, Encyclopedia Britannica, 22, 964-981). Terrestrial life requires liquid water. The stability of liquid water at the surface of a planet defines a habitable zone (HZ) around a star. In the Solar System, it stretches between Venus and Mars, but excludes these two planets. If the greenhouse effect is taken into account, the habitable zone may have included early Mars while the case for Venus is still debated. Important geodynamic processes affect the habitability conditions of a planet. As envisaged by the group, this IAP develops and closely integrates the geophysical, geological, and biological aspects of habitability with a particular focus on Earth neighboring planets, Mars and Venus. It works in an interdisciplinary approach to understand habitability and in close collaboration with another group, the Helmholtz Alliance "Life and Planet Evolution", which has similar objectives. The dynamic processes, e.g. internal dynamo, magnetic field, atmosphere, plate tectonics, mantle convection, volcanism, thermo-tectonic evolution, meteorite impacts, and erosion, modify the planetary surface, the possibility to have liquid water, the thermal state, the energy budget and the availability of nutrients. Shortly after formation (Hadean 4.4-4.0 Ga (billion years)), evidence supports the presence of a liquid ocean and continental crust on Earth (Wilde et al., 2001, Nature, 409, 175-178), Earth may thus have been habitable very early on. The origin of life is not understood yet but the oldest putative traces of life occur in the early Archaean (∼3.5 Ga). Studies of early Earth habitats documented in rock containing traces of fossil life provide information about environmental conditions suitable for life beyond Earth, as well as methodologies for their identification and analyses. The extreme values of environmental conditions in which life thrives today can also be used to characterize the "envelope" of the existence of life and the range of potential extraterrestrial habitats. The requirement of nutrients for biosynthesis, growth, and reproduction suggest that a tectonically active planet, with liquid water is required to replenish nutrients ...

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A diverse and exquisitely preserved organic-walled microfossil assemblage from the Meso–Neoproterozoic Mbuji-Mayi Supergroup (Democratic Republic of Congo) and implications for Proterozoic biostratigraphy

Cited by 63 publications

References 55 publications

An Introduction to the Precambrian Petroleum System in the Sankuru‐mbuji‐mayi‐lomami‐lovoy Basin, South‐central Democratic Republic of Congo

An Introduction to the Precambrian Petroleum System in the Sankuru‐mbuji‐mayi‐lomami‐lovoy Basin, South‐central Democratic Republic of Congo

Biostratigraphic and detrital zircon age constraints on the basement of the Himalayan Foreland Basin: Implications for a Proterozoic link to the Lesser Himalaya and cratonic India

PLANET TOPERS: Planets, Tracing the Transfer, Origin, Preservation, and Evolution of their ReservoirS

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