Mollusc Deposits Affirm Arabian Sea Levels Were 2-3 Meters Higher 7000-6000 Years Ago

Another day, anotherย new studyย has sea levels 2.5 to 3.2 m higher than present from 7000 to 6000 years ago. This one is from the Arabian Sea (Oman).

From NoTrickZone

Byย Kenneth Richard

Another day, anotherย new studyย has sea levels 2.5 to 3.2 m higher than present from 7000 to 6000 years ago. This one is from the Arabian Sea (Oman).

Embedded mollusc carbonate deposits dated to the Mid-Holocene have been located far inland from todayโ€™s shoreline, documenting the meters-higher relative sea levels at that time.

Sea levels were higher because less water was locked up on land as ice throughout the much warmer Mid-Holocene.

Image Source:ย Teillet et al., 2025

Paleoclimate Reconstructions Continue To Document A Much Warmer-Than-Today Holocene

According to aย new study, eastern Mediterranean summer temperatures were 1.5ยฐC to 3ยฐC โ€œgreater than the presentโ€ from about 11,000 to 7,000 years ago, when CO2 levels were approximately 265 ppm. Then the temperatures โ€œfollowed a gradual decline towards present-day conditionsโ€.

From NoTricksZone

Byย Kenneth Richardย onย 28. December 2023

Distribution of pollen records used in the climate reconstructions. The colour coding shows the length of the record.

According to a new study, eastern Mediterranean summer temperatures were 1.5ยฐC to 3ยฐC โ€œgreater than the presentโ€ from about 11,000 to 7,000 years ago, when CO2 levels were approximately 265 ppm. Then the temperatures โ€œfollowed a gradual decline towards present-day conditionsโ€.

โ€œThe MTWA also showed an increasing trend from 9โ€‰ka and reached a maximum of ca. 1.5ยฐC greater than the present at ca. 4.5 and 5โ€‰ka, followed by a gradual decline towards present-day conditions. โ€ฆ The TRACE-21k-I simulation shows peak summer temperatures between 11 and 9โ€‰ka, when the MTWA was ca. 3ยฐC greater than the presentโ€

Image Source:ย Cruz-Silva et al., 2023

Maps of study sites. (a) Location of our study area and (b) bathymetric map of western Japan showing the locations of Ohtaki Cave, Maboroshi Cave, Kiriana Cave, and Lake Nojiri.

Another new study indicates the climate average was much warmer (19.9ยฐC) during the mid-Holocene than today (13ยฐC) in Japan. The climate here was also warmer than today ~35-40,000 and ~55-60,000 years ago, when CO2 was said to be under 200 ppm.

โ€œThe average temperature during the period from 5.4 to 3.8 ka โ€ฆ is 19.9ยฐC ยฑ 6.0ยฐC and is higher than the present cave temperature of 13ยฐC.โ€

Image Source:ย Kato et al., 2023