Geochimica et Cosmochimica Acta
1. Carbonation rates of peridotite in the Samail Ophiolite, Sultanate of Oman, constrained through 14C dating and stable isotopes
Author(s): Evelyn M. Mervine , Susan E. Humphris , Kenneth W.W. Sims , Peter B. Kelemen , William J. Jenkins
Palaeogeography, Palaeoclimatology, Palaeoecology
2. Late Quaternary productivity changes in the equatorial Indian Ocean (ODP Hole 716A)
Author(s): Sudipta Sarkar , Anil K. Gupta
Highlights
•Major productivity shift is recorded across the mid-Brunhes climatic transition (~ 300 Kyrs ago) at Hole 716A.
•Surface productivity and organic flux diminished after the mid-Brunhes transition at Hole 716A.
•Indian Ocean Equatorial Westerlies (IEW) played vital role in productivity shifts at Hole 716A.
•Shallow to intermediate and deep-sea environments were coupled during the late Quaternary at Hole 716A.
•Faunal population remains least affected across glacial-interglacial transitions.
Keywords
Hole 716A; late Quaternary; mid-Brunhes; equatorial Indian Ocean; foraminifera; paleoenvironment; Indian Ocean equatorial westerlies (IEW)
3. Palynofacies and stable C and N isotopes of Holocene sediments from Lake Macuco (Linhares, Espírito Santo, southeastern Brazil): Depositional settings and palaeonvironmental evolution
Author(s): Flávio Lima Lorente , Luiz Carlos Ruiz Pessenda , Francisca Oboh-Ikuenobe , Antonio Alvaro Buso Jr. , Marcelo Cancela Lisboa Cohen , Karin Elise Bohns Meyer , Paulo César Fonseca Giannini , Paulo Eduardo de Oliveira , Dilce de Fátima Rossetti , Marcos Antonio Borotti Filho , Marlon Carlos França , Darciléa Ferreira de Castro , José Albertino Bendassolli , Kita Macario
Highlights
•A lake in southeastern Brazilian coast was studied by palynofacies, δ13C, δ15N and C/N
•An estuarine system occurred between 7,5 and 3,8 k cal yr. B.P.
•Over the past 3,8 k cal yr. B.P. a lake was developed
•Transgressive and regressive events occurred in the study site during the Holocene.
Keywords
Holocene; organic matter; palynofacies; carbon and nitrogen isotopes; southeastern Brazil
4. Stable isotopes on foraminifera and ostracods for interpreting incidence of the Toarcian Oceanic Anoxic Event in Westernmost Tethys: Role of water stagnation and productivity
Author(s): Matías Reolid
Highlights
•δ13C and δ18O from bulk rock and shells of foraminifera and ostracods from T-OAE.
•δ13C values are lower in Lenticulina indicating more depleted 13C in sediment pore-water of deep infaunal microhabitat.
•Lowest δ13C, diversity and abundance of foraminifera and higher TOC occur during suboxic conditions.
•δ13C of deep infauna reflect the suboxic conditions better than shallow infauna and whole sediment.
•Differences between δ18O of Dentalina and Lenticulina shells correspond to vital effect.
Keywords
Lagenina; vital effect; microhabitat effect; isotopic excursion; redox conditions; Lower Jurassic
5. Paleoclimatic changes on the southern Tibetan Plateau over the past 19,000years recorded in Lake Pumoyum Co, and their implications for the southwest monsoon evolution
Author(s): Mitsugu Nishimura , Tetsuya Matsunaka , Yoshimune Morita , Takahiro Watanabe , Toshio Nakamura , Liping Zhu , Fumiko Watanabe Nara , Akio Imai , Yasuhiro Izutsu , Kazuya Hasuike
Highlights
•We reconstructed the paleoclimate in the southern Tibetan Plateau (STP) since 19 ka.
•The paleoclimate was ameliorated earliest within the SW monsoon domain on the TP.
•The STP experienced almost no impact from all major dry/cold reversals.
•The first SW monsoon on the TP after the Y.D. generated at 11.4 ka BP in the STP.
•Subsequently, the monsoon extended from STP over the entire TP taking 3-4 kyrs.
Keywords
Southern Tibetan Plateau; Lake Sediments; Multi-proxy Analysis; Paleoclimatic Changes; Southwest Monsoon
6. Adélie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica)
Author(s): Sandra Lorenzini , Carlo Baroni , Ilaria Baneschi , Maria Cristina Salvatore , Anthony E. Fallick , Brenda L. Hall
Highlights
•The C and N isotopic composition of Adélie penguin guano samples has been investigated.
•Dietary remains have been found in sorted guano samples and taxonomically identified.
•A detailed paledietary record has been reconstructed for the southern Ross Sea.
•New insights into the Holocene oceanographic conditions of Ross Sea are discussed.
Keywords
Adélie Penguin; ornithogenic soil; stable isotope; palaeoenvironment; palaeoceanography
7. Geochemical records of palaeoenvironmental controls on peat forming processes in the Mfabeni peatland, Kwazulu Natal, South Africa since the Late Pleistocene
Author(s): A. Baker , J. Routh , M. Blaauw , A.N. Roychoudhury
Highlights
•Mfabeni peatland oldest land based climate record in southern Africa
•5 linear sedimentation rate stages indicating changes in hydraulic conditions
•High resolution hydraulic and plant assemblage record and their climatic controls
•Archive suggests an anti-phase climatic link with the northern hemisphere
Keywords
Palaeoenvironment; Palaeoclimate; Subtropical coastal peatland; Stable C and N isotopes; Elemental analyses
8. Nitrogen and organic carbon isotope stratigraphy of the Yangtze Platform during the Ediacaran-Cambrian transition in South China
Author(s): Lorenzo Cremonese , Graham A. Shields-Zhou , Ulrich Struck , Hong-Fei Ling , Lawrence M. Och
Highlights
•N and Corg analyses indicate an articulated and periodically complete nitrogen cycle.
•Nitrogen isotopes are potent geochemical tools to monitor the oxidative conditions of the seawater.
•We are able to build a paleoseawater circulation system across the Pc-C boundary.
•Episodically occurrence of green/purple sulfur Bacteria has been envisaged.
•Nitrogen isotopes preserved in rock sediments retained their original values.
Keywords
Ediacaran; Cambrian; nitrogen isotopes; organic carbon isotopes; Yangtze platform; marine biogeochemistry
9. Ecological effects of natural hazards and human activities on the Ecuadorian Pacific coast during the Late Holocene
Author(s): Sophak Lim , Marie-Pierre Ledru , Francisco Valdez , Benoît Devillers , Alfred Hougnon , Charly Favier , Laurent Bremond
Highlights
•A sediment core on coastal eastern Pacific dates back to 5000 cal yr BP
•XRF, stereomicroscopic, charcoal and pollen contents were analyzed.
•At ~ 3000 yr BP an earthquake induced changes in fluvial and geomorphological features.
•Increase of human activities was observed between 2980 and 1170 cal yr BP
•Climate conditions have not changed in the Choco region during the past 5000 years
Keywords
Pacific coast; rainforest; Ecuador; Choco biogeographic region; pollen; Holocene
Quaternary Research
10. Geochronology and paleoenvironment of pluvial Harper Lake, Mojave Desert, California, USA
Author(s): Anna L. Garcia , Jeffrey R. Knott , Shannon A. Mahan , Jordon Bright
Keywords
Mojave River; Harper Lake; Paleoclimate; Polar jet stream; Ostracode; Lake Manix; Geochronology; Radiocarbon; OSL; IRSL
Quaternary Science Reviews
11. Insights into continental temperatures in the northwestern Black Sea area during the Last Glacial period using branched tetraether lipids
Author(s): Lise Sanchi , Guillemette Ménot , Edouard Bard
Highlights
•We used branched GDGTs to infer Last Glacial temperatures in Black Sea catchment.
•We propose temperature corrections regarding possible branched GDGT origins.
•Cold spells related to the Younger Dryas, LGM and HE 2–3 are detected.
•Dansgaard–Oeschger interstadials 2–8 are not imprinted in the signals.
Keywords
brGDGTs; Black Sea; Continental paleotemperatures; MBT/CBT; Last Glacial; Abrupt climate changes
12. Arctic Ocean perennial sea ice breakdown during the Early Holocene Insolation Maximum
Author(s): Christian Stranne , Martin Jakobsson , Göran Björk
Keywords
Arctic climate; Holocene; Milankovitch cycles; Bølling–Allerød; Albedo feedback; Arctic sea ice
Chemical Geology
Earth and Planetary Science Letters
Palaeogeography, Palaeoclimatology, Palaeoecology
Global and Planetary Change
Marine Geology
Quaternary Geochronology
Quaternary International
Nothing Relevant
1. Carbonation rates of peridotite in the Samail Ophiolite, Sultanate of Oman, constrained through 14C dating and stable isotopes
Author(s): Evelyn M. Mervine , Susan E. Humphris , Kenneth W.W. Sims , Peter B. Kelemen , William J. Jenkins
Palaeogeography, Palaeoclimatology, Palaeoecology
2. Late Quaternary productivity changes in the equatorial Indian Ocean (ODP Hole 716A)
Author(s): Sudipta Sarkar , Anil K. Gupta
Highlights
•Major productivity shift is recorded across the mid-Brunhes climatic transition (~ 300 Kyrs ago) at Hole 716A.
•Surface productivity and organic flux diminished after the mid-Brunhes transition at Hole 716A.
•Indian Ocean Equatorial Westerlies (IEW) played vital role in productivity shifts at Hole 716A.
•Shallow to intermediate and deep-sea environments were coupled during the late Quaternary at Hole 716A.
•Faunal population remains least affected across glacial-interglacial transitions.
Keywords
Hole 716A; late Quaternary; mid-Brunhes; equatorial Indian Ocean; foraminifera; paleoenvironment; Indian Ocean equatorial westerlies (IEW)
3. Palynofacies and stable C and N isotopes of Holocene sediments from Lake Macuco (Linhares, Espírito Santo, southeastern Brazil): Depositional settings and palaeonvironmental evolution
Author(s): Flávio Lima Lorente , Luiz Carlos Ruiz Pessenda , Francisca Oboh-Ikuenobe , Antonio Alvaro Buso Jr. , Marcelo Cancela Lisboa Cohen , Karin Elise Bohns Meyer , Paulo César Fonseca Giannini , Paulo Eduardo de Oliveira , Dilce de Fátima Rossetti , Marcos Antonio Borotti Filho , Marlon Carlos França , Darciléa Ferreira de Castro , José Albertino Bendassolli , Kita Macario
Highlights
•A lake in southeastern Brazilian coast was studied by palynofacies, δ13C, δ15N and C/N
•An estuarine system occurred between 7,5 and 3,8 k cal yr. B.P.
•Over the past 3,8 k cal yr. B.P. a lake was developed
•Transgressive and regressive events occurred in the study site during the Holocene.
Keywords
Holocene; organic matter; palynofacies; carbon and nitrogen isotopes; southeastern Brazil
4. Stable isotopes on foraminifera and ostracods for interpreting incidence of the Toarcian Oceanic Anoxic Event in Westernmost Tethys: Role of water stagnation and productivity
Author(s): Matías Reolid
Highlights
•δ13C and δ18O from bulk rock and shells of foraminifera and ostracods from T-OAE.
•δ13C values are lower in Lenticulina indicating more depleted 13C in sediment pore-water of deep infaunal microhabitat.
•Lowest δ13C, diversity and abundance of foraminifera and higher TOC occur during suboxic conditions.
•δ13C of deep infauna reflect the suboxic conditions better than shallow infauna and whole sediment.
•Differences between δ18O of Dentalina and Lenticulina shells correspond to vital effect.
Keywords
Lagenina; vital effect; microhabitat effect; isotopic excursion; redox conditions; Lower Jurassic
5. Paleoclimatic changes on the southern Tibetan Plateau over the past 19,000years recorded in Lake Pumoyum Co, and their implications for the southwest monsoon evolution
Author(s): Mitsugu Nishimura , Tetsuya Matsunaka , Yoshimune Morita , Takahiro Watanabe , Toshio Nakamura , Liping Zhu , Fumiko Watanabe Nara , Akio Imai , Yasuhiro Izutsu , Kazuya Hasuike
Highlights
•We reconstructed the paleoclimate in the southern Tibetan Plateau (STP) since 19 ka.
•The paleoclimate was ameliorated earliest within the SW monsoon domain on the TP.
•The STP experienced almost no impact from all major dry/cold reversals.
•The first SW monsoon on the TP after the Y.D. generated at 11.4 ka BP in the STP.
•Subsequently, the monsoon extended from STP over the entire TP taking 3-4 kyrs.
Keywords
Southern Tibetan Plateau; Lake Sediments; Multi-proxy Analysis; Paleoclimatic Changes; Southwest Monsoon
6. Adélie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica)
Author(s): Sandra Lorenzini , Carlo Baroni , Ilaria Baneschi , Maria Cristina Salvatore , Anthony E. Fallick , Brenda L. Hall
Highlights
•The C and N isotopic composition of Adélie penguin guano samples has been investigated.
•Dietary remains have been found in sorted guano samples and taxonomically identified.
•A detailed paledietary record has been reconstructed for the southern Ross Sea.
•New insights into the Holocene oceanographic conditions of Ross Sea are discussed.
Keywords
Adélie Penguin; ornithogenic soil; stable isotope; palaeoenvironment; palaeoceanography
7. Geochemical records of palaeoenvironmental controls on peat forming processes in the Mfabeni peatland, Kwazulu Natal, South Africa since the Late Pleistocene
Author(s): A. Baker , J. Routh , M. Blaauw , A.N. Roychoudhury
Highlights
•Mfabeni peatland oldest land based climate record in southern Africa
•5 linear sedimentation rate stages indicating changes in hydraulic conditions
•High resolution hydraulic and plant assemblage record and their climatic controls
•Archive suggests an anti-phase climatic link with the northern hemisphere
Keywords
Palaeoenvironment; Palaeoclimate; Subtropical coastal peatland; Stable C and N isotopes; Elemental analyses
8. Nitrogen and organic carbon isotope stratigraphy of the Yangtze Platform during the Ediacaran-Cambrian transition in South China
Author(s): Lorenzo Cremonese , Graham A. Shields-Zhou , Ulrich Struck , Hong-Fei Ling , Lawrence M. Och
Highlights
•N and Corg analyses indicate an articulated and periodically complete nitrogen cycle.
•Nitrogen isotopes are potent geochemical tools to monitor the oxidative conditions of the seawater.
•We are able to build a paleoseawater circulation system across the Pc-C boundary.
•Episodically occurrence of green/purple sulfur Bacteria has been envisaged.
•Nitrogen isotopes preserved in rock sediments retained their original values.
Keywords
Ediacaran; Cambrian; nitrogen isotopes; organic carbon isotopes; Yangtze platform; marine biogeochemistry
9. Ecological effects of natural hazards and human activities on the Ecuadorian Pacific coast during the Late Holocene
Author(s): Sophak Lim , Marie-Pierre Ledru , Francisco Valdez , Benoît Devillers , Alfred Hougnon , Charly Favier , Laurent Bremond
Highlights
•A sediment core on coastal eastern Pacific dates back to 5000 cal yr BP
•XRF, stereomicroscopic, charcoal and pollen contents were analyzed.
•At ~ 3000 yr BP an earthquake induced changes in fluvial and geomorphological features.
•Increase of human activities was observed between 2980 and 1170 cal yr BP
•Climate conditions have not changed in the Choco region during the past 5000 years
Keywords
Pacific coast; rainforest; Ecuador; Choco biogeographic region; pollen; Holocene
Quaternary Research
10. Geochronology and paleoenvironment of pluvial Harper Lake, Mojave Desert, California, USA
Author(s): Anna L. Garcia , Jeffrey R. Knott , Shannon A. Mahan , Jordon Bright
Keywords
Mojave River; Harper Lake; Paleoclimate; Polar jet stream; Ostracode; Lake Manix; Geochronology; Radiocarbon; OSL; IRSL
Quaternary Science Reviews
11. Insights into continental temperatures in the northwestern Black Sea area during the Last Glacial period using branched tetraether lipids
Author(s): Lise Sanchi , Guillemette Ménot , Edouard Bard
Highlights
•We used branched GDGTs to infer Last Glacial temperatures in Black Sea catchment.
•We propose temperature corrections regarding possible branched GDGT origins.
•Cold spells related to the Younger Dryas, LGM and HE 2–3 are detected.
•Dansgaard–Oeschger interstadials 2–8 are not imprinted in the signals.
Keywords
brGDGTs; Black Sea; Continental paleotemperatures; MBT/CBT; Last Glacial; Abrupt climate changes
12. Arctic Ocean perennial sea ice breakdown during the Early Holocene Insolation Maximum
Author(s): Christian Stranne , Martin Jakobsson , Göran Björk
Keywords
Arctic climate; Holocene; Milankovitch cycles; Bølling–Allerød; Albedo feedback; Arctic sea ice
Chemical Geology
Earth and Planetary Science Letters
Palaeogeography, Palaeoclimatology, Palaeoecology
Global and Planetary Change
Marine Geology
Quaternary Geochronology
Quaternary International
Nothing Relevant
