By B.U. Haq, A. Boersma
This superbly illustrated textual content ebook, with state of the art illustrations, turns out to be useful not just for an advent to the topic, but additionally for the appliance of marine microfossils in paleoceanographic, paleoenvironmental and biostratigraphic analyses. the hot revival of curiosity in marine micropaleontology around the globe within the wake of the advance of series stratigraphic types has resulted in the choice to reissue the amount in its unique, yet paperback, shape. the tips expressed in quite a few chapters of this moment variation stay as legitimate this day as they have been whilst the e-book was once first issued. The textual content, even though, contains an up-to-date Phanerozoic geologic time which has been significantly transformed because the Nineteen Eighties.
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Extra resources for Introduction to Marine Micropaleontology
A. BOERSMA 27 Fig. 6. Agglutinated foraminifera and wall s t r u c t u r e : A. Tolypammina x 25). There are two p r i m a r y groups of agglutinated foraminifera, the simple, non-septate forms belonging to the superfamily Ammodiscacea, a n d the more complexly coiled and septate forms in the superfamily Lituolacea; compare the simple struct u r e s of figures A, B, C, I, J, Q and R to the more complexly coiled forms in this figure. B. Schematic drawing of the s t r u c t u r e of a simple agglutinated wall; a basal organic layer is overlain by particles which grade from finer inside to coarser at the outside.
The cratered wall of Globigerinoides is apparently most susceptible to solution, as these forms are the first to be lost from an association undergoing dissolution. C. Glohigerina and associated forms in well-preserved samples will possess elongate spines, believed in some cases to be calcified cores of rhizopods; these forms show medium resistance to solution. A. BOERSMA scopic crystallites of calcite that form the chamber walls. These crystallites may be randomly arranged or organized in a brick-Hke 29 pattern, but both patterns give the test a smooth, opaque appearance in polarized hght.
G. ruber m S. hirsuta / / 6. menardii QG. dutertrei /G. truncatulinoides ^ obliquiloculata / fi. tumida Factor 1 (Ala, Pro, Vol) A, 0fi. inflata / 6. crassaformis 6 \ S. dehiscens \ ^G congiobatus \ Factor 2 (Asp, T h r ) Fig. 14. Results of amino acid analysis of planktonic foraminifera. A. Sixteen species of Recent planktonic foraminifera to be analyzed for the amino acid composition of their calcareous tests; species are grouped according to the taxonomic classification based on morphological features.
Introduction to Marine Micropaleontology by B.U. Haq, A. Boersma