In the 4th millennium BCE, the city of Ur was a coastal city. It is now ~241 kilometers inland. In the intervening 5,000 years or so the Tigris and Euphrates rivers have extended the coastline that far to the southeast into the Persian Gulf. - ThreadSky

About ThreadSky

nickjbrumfield.bsky.social • 64 days ago

In the 4th millennium BCE, the city of Ur was a coastal city. It is now ~241 kilometers inland.

In the intervening 5,000 years or so the Tigris and Euphrates rivers have extended the coastline that far to the southeast into the Persian Gulf.

Comments

absintheofcolor.bsky.social•64 days ago

It’s from poor quality copper.

juddgreenstein.bsky.social•64 days ago

through silt/sand deposits?

nickjbrumfield.bsky.social•64 days ago

Yeah! Very similar to the Yellow, Yangtze, and Mississippis https://bsky.app/profile/nickjbrumfield.bsky.social/post/3kup3os4ws72x

juddgreenstein.bsky.social•64 days ago

wild, thanks! I didn't realize that process was so quick. (I thought the Mississippi case was about shifting land — the land moving around periodically — but maybe that's on smaller time frames with a longer-term accumulation?)

stuartweeks8.bsky.social•63 days ago

📌

emializh.bsky.social•64 days ago

eharding2000.bsky.social•63 days ago

Very doubtful; the salt water would have made drinking very difficult.

nickjbrumfield.bsky.social•64 days ago

Here's the Nile Delta. The reason Alexandria is built where it is at is so it wouldn't shift.

Posting Rules

Be respectful to others
No spam or self-promotion
Stay on topic
Follow Bluesky's terms of service

Comments

Posting Rules

Reply