Geology of Washington, D.C.
The Geology of Washington, D.C., is broadly divisible into two regions.sedimentary deposits laid down during the much more recent Tertiary and Quaternary periods, like the bordering areas of southern Maryland.[1] Some areas in Northeast and Southeast Washington also feature hilly terrain, especially east of the Anacostia River; this however stems from rivers and creeks down-cutting into the relatively soft soil.
City founders
Arlington, Virginia shore behind as it slows and widens. The Tidal Basin and the Washington Channel are part of this wider section of the river. Much of the National Mall was marsh
in the early Nineteenth century; as the capital city grew, the marsh was filled in and reclaimed.
References
- ^ ISBN 978-0-87842-570-9.