A5071961759- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Marine Biology and Ecology Research
- Geological formations and processes
- Astro and Planetary Science
- Geological and Geophysical Studies
- Astronomical Observations and Instrumentation
- Geophysics and Gravity Measurements
- Spacecraft and Cryogenic Technologies
- Paleontology and Evolutionary Biology
- Geomagnetism and Paleomagnetism Studies
- Planetary Science and Exploration
- Offshore Engineering and Technologies
- Ichthyology and Marine Biology
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Cryospheric studies and observations
- Solar and Space Plasma Dynamics
- Polar Research and Ecology
- Fish biology, ecology, and behavior
- Astronomy and Astrophysical Research
- Hydrocarbon exploration and reservoir analysis
Universidade do Vale do Rio dos Sinos
2016-2025
Ospedale Cristo Re
2023
Faculdade São Leopoldo Mandic
2023
Brazilian National Association of Graduate Programs in Communication
2023
Discovery Place
2021
Texas A&M University
2021
United States Office of Personnel Management
2021
Sam Houston State University
2021
University of Plymouth
2021
Geological Survey of Western Australia
2021
Abstract Antarctica is one of the most vulnerable regions to climate change on Earth and studying past present responses this polar marine ecosystem environmental a matter urgency. Sedimentary ancient DNA ( sed aDNA) analysis can provide such insights into ecosystem-wide changes. Here we authenticated (through extensive contamination control aDNA damage analysis) metagenomic eukaryote from Scotia Sea region acquired during IODP Expedition 382. We also record ~1 Mio. years diatom chlorophyte...
Abstract The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages their role in influencing the carbon cycle. We report a high-resolution record of dust deposition ocean for Antarctic Zone, close to main source, Patagonia. Our deep-ocean records cover last 1.5 Ma, thus doubling that from ice-cores. find 5 15-fold increase during glacials 2 5-fold biogenic silica deposition, reflecting higher...
In recent years, there has been an increasing number of studies describing significant disturbances the global carbon cycle during latest Cretaceous. One example these is Mid-Maastrichtian Event (MME), which was likely related to changes in deep ocean circulation, particularly Atlantic realm.To track and characterize influence MME deep-water environments equatorial South American margin, we conducted micropaleontological (benthic foraminifers) geochemical analyses sediments from Ocean...
Abstract The Eocene–Oligocene Transition (EOT: ∼34.4–33.7 Ma) marks a major climatic shift from warmhouse to coolhouse state, characterized by the extinction of rosette‐shaped calcareous nannofossils ( Discoaster spp.) and expansion first large‐scale Antarctic ice sheet. While changes in ocean circulation declining atmospheric CO 2 levels have been proposed as primary drivers, recent studies emphasize role carbon cycle. This study investigates paleoceanographic Western Pacific using...
Abstract Fossils from the Araripe Basin (northeastern Brazil) are known for their remarkable preservation of vertebrates and invertebrates, even including soft tissues. They occur in carbonate concretions within organic carbon‐rich strata assigned to Romualdo Formation. Here we present integrated stable isotope, elemental microfossil records Sítio Sobradinho outcrop, Basin, northeastern Brazil. Our results imply that black shales hosting fossil‐bearing lower Formation were deposited during...
No abstract available. <br><br> doi:<a href="http://dx.doi.org/:10.2204/iodp.sd.13.07.2011" target="_blank">:10.2204/iodp.sd.13.07.2011</a>
Abstract International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among most continuous and highest resolution stratigraphic records Southern near Antarctica spanning last 3.3 Myr. Sites drilled Dove Basin (U1536/U1537) have well‐resolved magnetostratigraphy a strong imprint of orbital forcing their lithostratigraphy. All magnetic reversals Myr are identified, providing robust age model independent tuning. During Pleistocene, alternation...
This work presents a taxonomic study on the Late Maastrichtian radiolarian fauna from ODP Leg 165, Hole 999B, Colombian Basin. The studied is composed by 24 species, being family Archaeodictyomitridae Pessagno, 1976 most abundant and diverse. Original opaline skeletons are replaced calcium carbonate precise identifications possible only for those specimens with sturdy skeletons, what strongly suggests preservational bias. was attributed to Amphipyndax tylotus zone, due occurrence of that...
Research Article| October 01, 2013 APTIAN–ALBIAN PLANKTIC FORAMINIFERA FROM DSDP SITE 364 (OFFSHORE ANGOLA): BIOSTRATIGRAPHY, PALEOECOLOGY, AND PALEOCEANOGRAPHIC SIGNIFICANCE Karlos G. D. Kochhann; Kochhann 4 1ITT FOSSIL—Instituto Tecnológico de Micropaleontologia, Universidade do Vale Rio dos Sinos, Bloco 6K, Av. UNISINOS, 950, 93022-000, São Leopoldo, RS, Brazil 4Correspondence author. E-mail: kkochhann@unisinos.br Search for other works by this author on: GSW Google Scholar Eduardo A. M....
Paleoecological analyses are important tools for the reconstruction of paleoenvironments. This paper had objective using analysis ostracode assemblages and carbonate microfacies a well (Carbomil) an outcrop (Quixeré) from Jandaíra Formation, Potiguar Basin, in order to verify how they corroborate complement other. Two paleoenvironments Carbomil Well (assemblages 1 2, respectively marine brackish neritic environments) one Quixeré Outcrop (assemblage 3, environment) were identified through...
Abstract Ice loss in the Southern Hemisphere has been greatest over past 30 years West Antarctica. The high sensitivity of this region to climate change motivated geologists examine marine sedimentary records for evidence episodes Antarctic Sheet (WAIS) instability. Sediments accumulating Scotia Sea are useful purpose because they receive iceberg‐rafted debris (IBRD) sourced from Pacific‐ and Atlantic‐facing sectors Here we report on sedimentology provenance oldest three cm‐scale...
Abstract A total of 113 species belonging to 54 genera are recovered from a study the M aastrichtian and D anian deposits in C erro zul section N euquén B asin, west‐central rgentina. Of these, 9 new genera, 38 28 open nomenclature recorded. These form basis present listed below. Genera: P helocyprideis gen. nov., leisocythereis patoleberis imicocythereis astillocythereis H ysterocythereis O rthrocosta etalocythereis nov. Sthenarocythereis Species: ytherella saraballentae sp. semicatillus...