Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr

Rodrigo-Gámiz, Marta; Martı́nez-Ruiz, Francisca; Rodrı́guez-Tovar, Francisco J.; Pardo‐Igúzquiza, Eulogio; Ortega-Huertas, M.

doi:10.1007/s00382-017-3782-y

Cited by 5 publications

(1 citation statement)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1,500 years), in the eastern Alboran Sea for the last 20 kyr has been previously described (Rodrigo-Gámiz et al, 2014;. The planktonic foraminifera δ 18 O signal was either out of phase or did not correlate at all in the cross-spectral analysis with any of the other paleoenvironmental proxies used, suggesting that the δ 18 O record also registered changes in the regional hydrological cycle and not only the global ice volume and temperature (Rodrigo- Gámiz et al, 2018).…”

Section: The δ 18 O Record: Comparison With Greenland Ice-core and Nearby Western Mediterranean Recordsmentioning

confidence: 78%

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (U^K'₃₇, TEX^H₈₆, RI‐OH', and LDI)

Morcillo-Montalbá

Rodrigo-Gámiz

Martı́nez-Ruiz

et al. 2021

Paleoceanog and Paleoclimatol

Self Cite

View full text Add to dashboard Cite

The westernmost Mediterranean is one of the most sensitive areas to global climate change and high sedimentation rates allow recording high frequency variability. We present a high‐resolution paleotemperature reconstruction over the last 35 kyr using, for the first time, four independent organic sea surface temperature (SST) proxies (UK'37, TEXH86, RI‐OH' and LDI) based on alkenones, (hydroxy) isoprenoid GDGTs, and long‐chain diols. We also generated a δ18O of planktonic foraminifera G. bulloides record together with records of bulk parameters (total organic carbon content, δ13Corg) and the accumulation rates of different biomarkers to provide insights into terrestrial input and primary producers. All derived‐SST records showed similar trends over the last 35 kyr, revealing abrupt temperature variations during the last seven Dansgaard‐Oeschger (D/O) cycles, the three Heinrich (H) events, the Last Glacial Maximum, and the Younger Dryas. H3 is recognized as the coldest event, while H1 was recorded by all SST proxies as the most abrupt one. In general, TEXH86‐, RI‐OH'‐ and LDI‐SST estimates were lower than those obtained from UK'37. The LDI paleothermometer recorded the largest range of absolute SSTs over the whole period (ca. 20°C) followed by RI‐OH' (ca. 16°C). TEXH86, RI‐OH' and LDI proxies reflected sudden SST changes during the D/O 6 and 5 particularly well. Low BIT values and the abundance of C32 1,15‐diol in range with typical marine values indicated only minor input of continental organic matter. Accumulation rates of different lipid biomarkers were generally modulated by D/O cycles, suggesting enhanced productivity during D/O interstadials and the Bölling‐Alleröd period.

show abstract

Section: The δ 18 O Record: Comparison With Greenland Ice-core and Nearby Western Mediterranean Recordsmentioning

confidence: 78%

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (U^K'₃₇, TEX^H₈₆, RI‐OH', and LDI)

Morcillo-Montalbá

Rodrigo-Gámiz

Martı́nez-Ruiz

et al. 2021

Paleoceanog and Paleoclimatol

Self Cite

View full text Add to dashboard Cite

show abstract

Sedimentary records of the Yangtze Estuary over the past 70 years and their implications for provenance

Chi

Liu

et al. 2020

Environ Earth Sci

View full text Add to dashboard Cite

The Yangtze River is the largest river in southern China. In this study, the two sediment cores (CM-A and NH-C) taken from the Yangtze River Estuary were analyzed for 210 Pb and 137 Cs dating, major and trace elements, rare earth elements (REEs) and grain size of sediments. The results showed that the sedimentary ages of CM-A and NH-C cores were 37 and 64 years respectively. Then the major and trace elements in the sediments of the Yangtze Estuary were derived from terrigenous clastic materials. The chemical index of alteration (CIA) in the two cores ranged between 57 and 70, 66 and 73, respectively, reflecting the low to intermediate intensity of chemical weathering in the provenance area. The abundance of heavy minerals, grain size in hydrodynamically sorted, and chemical weathering have less effect on REE chemistry in the core CM-A, as well as the source of sediments in the core CM-A can be identified. By comparing the geochemical elements of sediments from the Yangtze River Basin, The provenance of sediments in the upper reaches of the Yangtze River might be similar to those of core CM-A sediments. Combined with A-CN-K and La-Th-Sc ternary diagrams and source discrimination diagrams of REEs parameters, it was presumed that the samples were influenced by K metasomatism, and originated from the same source area, and the granodiorite was the most probably source rock of these samples. Therefore, the upper reaches of the Yangtze River are considered to be the main source area of the sediments core CM-A.

show abstract

Terrain methods on spectral analysis for paleoclimate interpretations: A novel visualization technique using python

Sánchez-Morales¹,

Pardo‐Igúzquiza²,

Rodrı́guez-Tovar³

2023

Computers & Geosciences

View full text Add to dashboard Cite

Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr

Cited by 5 publications

References 66 publications

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (U^K'₃₇, TEX^H₈₆, RI‐OH', and LDI)

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (U^K'₃₇, TEX^H₈₆, RI‐OH', and LDI)

Sedimentary records of the Yangtze Estuary over the past 70 years and their implications for provenance

Terrain methods on spectral analysis for paleoclimate interpretations: A novel visualization technique using python

Contact Info

Product

Resources

About

Appraising timing response of paleoenvironmental proxies to the Bond cycle in the western Mediterranean over the last 20 kyr

Cited by 5 publications

References 66 publications

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (UK'37, TEXH86, RI‐OH', and LDI)

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (UK'37, TEXH86, RI‐OH', and LDI)

Sedimentary records of the Yangtze Estuary over the past 70 years and their implications for provenance

Terrain methods on spectral analysis for paleoclimate interpretations: A novel visualization technique using python

Contact Info

Product

Resources

About

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (U^K'₃₇, TEX^H₈₆, RI‐OH', and LDI)

Rapid Climate Changes in the Westernmost Mediterranean (Alboran Sea) Over the Last 35 kyr: New Insights From Four Lipid Paleothermometers (U^K'₃₇, TEX^H₈₆, RI‐OH', and LDI)