Ordovician radiometric dating dating site ricardo brazillian
In addition to conodonts, brachiopods are also found preserved in the limestone and shale of the Emanuel formation.
Around seventy percent of the shells recovered from the basin are broken which suggests the occurrence of strong tides.
Through the deposition and compression of sediments that eroded from the land, the formation of strata containing distinct marine microfossils occurred.
Although the environment today is desert, evidence suggests that the basin was a deep water marine environment of high faunal diversity during the Ordovician period.
In addition, the shallow portion of the basin endured turbulent tides, as evidenced by observing erosional evidence and the poor preservation of gastropod shells found in the Canning Basin.
Of special interest are the abundance of the aforementioned conodonts, brachiopods, gastropods, and trilobites which indicate the favorable marine conditions of the period.