Bettina Schaefer
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View article: Shaping of the Present-Day Deep Biosphere at Chicxulub by the Impact Catastrophe That Ended the Cretaceous
Shaping of the Present-Day Deep Biosphere at Chicxulub by the Impact Catastrophe That Ended the Cretaceous Open
We report on the effect of the end-Cretaceous impact event on the present-day deep microbial biosphere at the impact site. IODP-ICDP Expedition 364 drilled into the peak ring of the Chicxulub crater, México, allowing us to investigate the …
View article: The end-Cretaceous mass extinction event--Recovery and evolution of life
The end-Cretaceous mass extinction event--Recovery and evolution of life Open
The end-Cretaceous mass extinction is linked to an asteroid impact 66 Ma ago. Biomarker and stable isotopes are used to summarise the extinction event and the recovery of microbial life in the Chicxulub impact crater. First evidence of pho…
View article: Life and death in the Chicxulub impact crater: a record of the Paleocene–Eocene Thermal Maximum
Life and death in the Chicxulub impact crater: a record of the Paleocene–Eocene Thermal Maximum Open
Thermal stress on the biosphere during the extreme warmth of the Paleocene–Eocene Thermal Maximum (PETM) was most severe at low latitudes, with sea surface temperatures at some localities exceeding the 35 ∘C at which marine organisms exper…
View article: Winding down the Chicxulub impact: The transition between impact and normal marine sedimentation near ground zero
Winding down the Chicxulub impact: The transition between impact and normal marine sedimentation near ground zero Open
View article: Organic matter from the Chicxulub crater exacerbated the K–Pg impact winter
Organic matter from the Chicxulub crater exacerbated the K–Pg impact winter Open
An asteroid impact in the Yucatán Peninsula set off a sequence of events that led to the Cretaceous–Paleogene (K–Pg) mass extinction of 76% species, including the nonavian dinosaurs. The impact hit a carbonate platform and released sulfate…
View article: Origin of a global carbonate layer deposited in the aftermath of the Cretaceous-Paleogene boundary impact
Origin of a global carbonate layer deposited in the aftermath of the Cretaceous-Paleogene boundary impact Open
View article: Life and death in the Chicxulub impact crater: A record of the Paleocene-Eocene Thermal Maximum
Life and death in the Chicxulub impact crater: A record of the Paleocene-Eocene Thermal Maximum Open
Thermal stress on the biosphere during the extreme warmth of the Paleocene-Eocene Thermal Maximum (PETM) was most severe at low latitudes, with sea surface temperatures at some localities exceeding the 35 °C at which marine organisms exper…
View article: Microbial life in the nascent Chicxulub crater
Microbial life in the nascent Chicxulub crater Open
The Chicxulub crater was formed by an asteroid impact at ca. 66 Ma. The impact is considered to have contributed to the end-Cretaceous mass extinction and reduced productivity in the world’s oceans due to a transient cessation of photosynt…
View article: Supplemental Material: Microbial life in the nascent Chicxulub crater
Supplemental Material: Microbial life in the nascent Chicxulub crater Open
View article: The habitat of the nascent Chicxulub crater
The habitat of the nascent Chicxulub crater Open
An expanded sedimentary section provides an opportunity to elucidate conditions in the nascent Chicxulub crater during the hours to millennia after the Cretaceous‐Paleogene (K‐Pg) boundary impact. The sediments were deposited by tsunami fo…
View article: Microbial life in the nascent Chicxulub crater
Microbial life in the nascent Chicxulub crater Open
The Chicxulub crater was formed by an asteroid impact at ca. 66 Ma. The impact is considered to have contributed to the end-Cretaceous mass extinction and reduced productivity in the world’s oceans due to a transient cessation of photosynt…
View article: The first day of the Cenozoic
The first day of the Cenozoic Open
Highly expanded Cretaceous–Paleogene (K-Pg) boundary section from the Chicxulub peak ring, recovered by International Ocean Discovery Program (IODP)–International Continental Scientific Drilling Program (ICDP) Expedition 364, provides an u…