CIV 442 Hydrology: Lecture 2: Intro To Hydrogeology of Uae
CIV 442 Hydrology: Lecture 2: Intro To Hydrogeology of Uae
CIV 442 Hydrology: Lecture 2: Intro To Hydrogeology of Uae
HYDROLOGY
LECTURE 2: INTRO TO HYDROGEOLOGY
OF UAE
http://en.wikipedia.org/wiki/Rub%27_al_Khali
http://www.southampton.ac.uk/~imw/Qa
tar-Sabkhas.htm
Gypsum ,anhydrite, and halite are called marine evaporites.
EVAPORITES These layers are produced when a shallow sea exists over an
area with little wave activity (so that little influx of fresh or
sea water takes place) and in climates where evaporation
exceeds precipitation.
Uses of Gypsum
Gypsum uses include: drywall or wallboard, cement, soil
conditioning, a hardening retarder in Portland cement.
Varieties of gypsum known as "satin spar" and "alabaster" are
used for a variety of ornamental purposes; however, their
low hardness limits their durability.
WHY DO WE PROTECT
STRUCTURES FROM
SULFATES?
Reem Island,
Nov 2014
Reem Island,
Nov 2014
Reem Island
Dec 2014
MICROBIAL MATS
Thin layers of cyano-bacterial mat (0-60 cm thickness) are
encountered at coastal locations in Abu Dhabi. At the east end
of the Khor Al Bazam lagoon cyano-bacterial mats, together
with the associated tidal sands and muds, parallel the coast for
42 km, and in other locations they parallel the coast for 9 km.
Source: http://arch.ced.berkeley.edu/hiddenecologies/?p=349
Role:
Stabilize soil
Trap nutrients