Geological formation around this epicenter consists of clastic
and carbonate rocks.
Figures 15(d) and 15(e) demonstrate the significant advantage of the [[lambda].sub.p], [[micro].sub.p] cross-plot in isolating both lithologic properties (such as sand, shale, and clastic
facies) as well as the gas zone compared to IP and IS cross-plot.
Results indicate that facies of Tokerau Clastics
and Mangakahia complex of the Northland Allocution rocks plot within the recycled orogenic fields while samples from Omahutta facies of the Motatau Complex fall in the transitional and Craton interior zones.
Nomenclature and classification of clastic
and argillaceous sediments.
They indicated that this graphical procedure "may be used by practicing environmental geochemists and by students in laboratory exercises in environmental science courses at the college or even high school level." Faure and Mensing (2005) extended the utilization of this graphical representation beyond hydrogeology to "the formation of clastic
sedimentary rocks composed of mixtures of grains of different minerals or rock types." An example of the procedure that Petz-Faure called a Mixing Triangle is depicted in Figure 1a.
The patchy distribution of pockets rich in clastic
material is observed in the Kernave and Leivu formations.
1971) recognises 2 principal units in these sediments: deposits of coarse clastic
sediments and limestone.
(non-carbonate, inorganic) content of each sample, principally silicates, iron and aluminum oxides, was calculated by subtracting organic matter and calcium carbonate content from total sample dry weight.
The claims are underlain by limey, fine-grained clastic
and chert strata of the Ordovician/Silurian Vinini Formation thrust over the similar lithological units of the Devonian Rodeo Creek Formation and intruded by post-Paleozoic igneous rocks.
The Anderson Formation clastic
reservoirs are a deeper secondary conventional oil target below 1,800 metres.