THE PRECAMBRIAN ERA

The Precambrian sub-divided into:

The Archean Era (about 3960-2500 Mya)

The Proterozoic Era (about 2500-540 Mya)

ACTIVITIES IN THE ARCHEAN ERA

Extensive Orogenesis

The prokaryotes, bacteria and blue-green algae emerged

Formation of Greenstone belts and banded iron ores

Shallow seas appeared.

ACTIVITIES IN THE PROTEROZOIC ERA

Eukaryotic cells and multicellular lives emerged

The Earth experienced warm and moist conditions

The Earth experienced Dry and Cold climate

Soft-bodied marine invertebrates (Earliest known fossils) e.g. Annelids, Sponges, Sea anemones emerged

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Haystack rock of Cannon Beach, Oregon

credit: I just stumbled upon this rock called Haystack Rock located in the coast of Oregon. It is a popular icon and a tourist centre especially for movie makers. The sea-washed sand on Cannon Beach makes a mirror image of the 235-foot basalt monolith known as Haystack Rock. Further reading... It might interest you to know that at low tide, holes and crags in the stone’s base become tide pools, a primary habitat for numerous sea creatures. At the rock’s high tide level is the abode of the sea birds like bald eagle, tufted puffins, and pelagic cormorants. See Credit Here:

GROUNDWATER POLLUTION (vis-à-vis Groundwater Quality) AND CAUSES

Groundwater in it’s natural state is made up of dissolved substances including gases. These contribute greatly to it’s quality. The surrounding environment (Formations), anthropological and bacterial activities influence it’s quality as well. Below is a rundown of factors that determine the quality of any groundwater: They can be categorised into: 1. Physical factors; 2. Bacterial factors; 3. Chemical factors; 4. Anthropological factors. Physical factors can be easily seen with the eyes without first being analysed in the laboratory. They are apparent to the physical senses of sight, smell, taste and in some cases, touch. It can be known physically if a groundwater is polluted or not by Colour changes, Odour, presence of suspended materials. The presence of suspended materials make the water appear cloudy. Commonsensically, no sane person will like to consume anything, let alone, water tha...

Vasquez Rocks

Have you heard of Vasquez Rock? Credit: The above picture will be alien except to those within the vicinity of Aqua Dulce, California or perhaps, those that have visited here at one time or the other. Just watch the arcs and the angles formed by this deposit!! In case you do not know, the image you are seeing is Vasquez Rocks. Am fascinated about the arcs and the acute angles formed by this deposit.. Your groundwater may be polluted!!! Nature is indeed wonderful!!!! For emphasis sake, this is in Aqua Dulce, California, north of Los Angeles. Research has it that the ‘arcs’ formed (i.e. tilting was as a result of the North American Plate collision with the Pacific Plate) along the San Andreas fault. We can see that the collision resulted in the uplift.

GEO SOLUTIONS

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