Arab Today, arab today ancient seawater entombed in ancient impact crater yields secrets
Last Updated : GMT 14:54:40
Arab Today, arab today
Arab Today, arab today

Ancient seawater entombed in ancient impact crater yields secrets

Arab Today, arab today

Arab Today, arab today Ancient seawater entombed in ancient impact crater yields secrets

Preston - UPI

The world's oceans 100 million to 145 million years ago were more than twice as salty as they are today, U.S. scientists studying ancient sediments say. Sediments retrieved from a crater formed when a 2-mile-wide asteroid or comet struck off the Atlantic coast of North America 35 million years ago containing remnants of Early Cretaceous North Atlantic seawater allowed them to make a direct estimate of the water's age and salinity, the researchers reported in the journal Nature. "Previous evidence for temperature and salinity levels of geologic-era oceans around the globe have been estimated indirectly from various types of evidence in deep sediment cores," said Ward Sanford, a U.S. Geological Survey hydrologist and lead author of the study. "In contrast, our study identifies ancient seawater that remains in place in its geologic setting, enabling us to provide a direct estimate of its age and salinity." The 56-mile wide Chesapeake Bay oceanic impact crater, one of just a few discovered around the world and the largest crater found in the United States, is now buried beneath between 400 to 1,200 feet of silt, sand and clay, which has entombed the ancient seawater within it. Starting around 100 million years ago, the researchers estimate, North Atlantic salinity began to change to that of modern seawater as the Chesapeake Bay crater was transitioning from being a closed rift basin to an open ocean.

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today ancient seawater entombed in ancient impact crater yields secrets Arab Today, arab today ancient seawater entombed in ancient impact crater yields secrets

 



Arab Today, arab today
Arab Today, arab today Hats, scarves add beauty to women

GMT 19:10 2017 Friday ,17 February

Hats, scarves add beauty to women
Arab Today, arab today Tourist guide reveals methods of tourist attractions

GMT 17:46 2017 Saturday ,18 February

Tourist guide reveals methods of tourist attractions
Arab Today, arab today To release new antiques collection

GMT 20:33 2017 Friday ,17 February

To release new antiques collection
Arab Today, arab today Air raid kills eight women, child

GMT 06:42 2017 Friday ,17 February

Air raid kills eight women, child
Arab Today, arab today Murder of 2 reporters in Dominican Republic

GMT 22:45 2017 Thursday ,16 February

Murder of 2 reporters in Dominican Republic
View News in Arabic - Culture: أخبار الثقافة والفنون
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Kidogo provides childcare for underserved

GMT 20:24 2017 Wednesday ,15 February

Kidogo provides childcare for underserved
Arab Today, arab today Tragic fluctuations of Bakhtiari's life revealed

GMT 06:50 2017 Wednesday ,15 February

Tragic fluctuations of Bakhtiari's life revealed
Arab Today, arab today London to tax old cars

GMT 14:06 2017 Friday ,17 February

London to tax old cars
Arab Today, arab today Pluto's unruly moons

GMT 06:31 2015 Thursday ,04 June

Pluto's unruly moons
Arab Today, arab today Competes Sweden and Germans by S90

GMT 22:36 2017 Thursday ,16 February

Competes Sweden and Germans by S90
Arab Today, arab today Porsche reveals new 2018 Panamera

GMT 17:31 2017 Wednesday ,15 February

Porsche reveals new 2018 Panamera
Arab Today, arab today Actress Nadeen Al Rassi views art as her entity

GMT 07:30 2017 Saturday ,18 February

Actress Nadeen Al Rassi views art as her entity
Arab Today, arab today Teach monkeys to recognize themselves in mirror

GMT 20:41 2017 Wednesday ,15 February

Teach monkeys to recognize themselves in mirror

GMT 07:05 2017 Friday ,17 February

Singer Diana Karzon will issue a new album soon

GMT 06:40 2017 Friday ,10 February

MP calls for removing text from Islamic story

GMT 13:16 2017 Tuesday ,14 February

First fashion model with Down syndrome

GMT 10:26 2017 Tuesday ,14 February

Emergency UN meeting in Harare

GMT 14:04 2017 Tuesday ,14 February

"Lagom" new Swedish concept in interior design

GMT 12:07 2017 Thursday ,16 February

Bite-mimicking malaria vaccine

GMT 09:03 2017 Thursday ,16 February

Tour guide praises women’s beaches

GMT 13:12 2015 Saturday ,09 May

Sheikh Sultan opens Sharjah Centre

GMT 21:42 2017 Sunday ,12 February

Rania al-Ghazali designs candles of bubbles
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday