Report of the Committee on Sedimentation 1939-1940 Presented at the Annual Meeting of the Division of Geology and Geography (1940) / Chapter Skim
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B. Mineralogy of sedimentary rocks, 1937-1939
B. Mineralogy of sedimentary rocks, 1937-1939
Pages 22-69
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From page 22... ...
In the broadest senso, however, fit includes the composition of all sediments including the loss colon typos such as coal, photo, salines, etca In this bibliography the mineralogy of common sediments only is ~hasizod a~ the tochnia.,ues applicable to such materials are Mauri owed ~ ~ survey of the published Caners of the Cast three vears reveals significant trends. Clay-mineral research deserves special mention.
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From page 23... ...
The conclusion to which us self was forced, namely, the olimination of contain spocice by solution following the deposition of the sediment, rocoivos support Ram ~=thsonts work on tho Estuarina series cot Yorkshiro. Smithson (125)
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From page 24... ...
. well have forr,~d: from biot-ito as contained rutted x:codlos Ad : associated heavy minor~ls of metamorphic origin sit, .
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From page 25... ...
We Cheltenha~ clay of Penns,~,rlv~a~ian age contains valuable commercial flint Id plasti c fire clays in east ce~-ltr~ ~isso~i. This report contains ~nfo~ation concerting the occurrence and mineral composition of the Cholto~ara clays and should be valuable in the exploration, utilization, and solution of problems rolotod to the bur3:~irg behavior of these clays.
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From page 26... ...
: The mineral composition of over 400 samples is tabulated.
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From page 27... ...
999-1000, 1937 . The sanely sediments of the Terrub~ Donation, Provence, are assigned to the Permian on the basis of their heavy mineral content.
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From page 28... ...
B ~_ ; . Detelmir~tlon of Me heavy mineral fractions of two grasps .0t So fry the .~hara D.es=~..
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From page 29... ...
7-12, 1957. Investigates heavy mineral assemblages from soils of several West Australian localities with ~ vierr to detent, the nature of the parent rock.
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From page 30... ...
are authigenic. lye distributive province at the sc~ty heavy mineral residue is not Ce~J idmlifiod.
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From page 31... ...
I~e roundness of the grains (estimated) and the heavy minerals of the sands were d etexmined and tabulated.
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From page 32... ...
aggregates of feldspar and/or quartz grains cernent<3a by secondary-growth feldspar. In no case see non-ma:r~ne sediments show those relations.
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From page 33... ...
97-105 , 1938. Tori s parer is largely a discussion- of the larger geology c problems of the Philadelphia region and the robe that heavy minerals might play in the solution of these problem.
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From page 34... ...
. The Rhine sands are derived from aid Devonian and Carboniferous gray,racke, slates add basic eyes, glacial moraines and tho volcanic rocks of the RILenian massive.
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From page 35... ...
276-540, 1937. General discussion of the properties, structure, and distribution of the various silicate clay minerals, including the development of I;r~owledge regarding Sheen; bibliography.
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From page 36... ...
561-562, lg37. Differentiates the bonder clam of northwest Germany, west of the Rostock-Leipzig region, by their heavy mineral content.
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From page 37... ...
A diabase on the north shore of Lake Superior, Minnesota, is weathered locally to a depth Of 40 feet but shows little chenical change except oxidation. An ~phibol~te from the Black Ills, South Dakota, yielded bs~dellite or related clay minerals by decomposition of its hornblende.
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From page 38... ...
Em. Bull., Heavy mineral analyses me used to support other evidence of pro- or inter-glacial weatho~rir~ of bedrock bon=th fresh till.
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From page 39... ...
I~ne geological aspects of clay mineralogy-, such as distribution of the clay minerals, their In,. Id the Post-depositiona~ changes in argillaceous sediments, are adequately Ted.
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From page 40... ...
Geol ., vol. ~45, Studies of the clay minerals contained in the fine fraction of tho insoluble residues from thirty-five Illinois limestone.
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From page 41... ...
Centrifuging - th hear liquids did not appreciably affect the quantity of heavy minerals recovered, neither did evacuation of the centrifuged staple, nor did use of several t,~,rpes of separation glassware. Acid treatment was carried out on the magnetite fraction for removal of iron oxide coatAmp.
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From page 42... ...
E Id play, 3~.: Petrology of the sedimentary rocks.
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From page 43... ...
69. Ile:~dricks, Stewing B.: On the crystal structure of the clay minerals: D' ckite, halloys~t e and hydrated halloys~te.
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From page 44... ...
157-206, 1937. Petrography of the Tertiary sediments irk the southern lower Rhine basin, Gentry, Stub special reference to t:tacir heady mineral content as a basis for subd~,ris~on Id correlation.
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From page 45... ...
20-35, 1938. Heavy mineral analysis It garnet strand borders of the Baltic Sea near 3!
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From page 46... ...
. Seventy hind spec~m=~' 35 thin sections and 12 heavy mineral residues town- the basis for the study of the Siwa;lik series
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From page 47... ...
I'fn neralogy of water [[coding;. Producers The study of thin sections is recommended as a means of determining the st:cactu~al factors affecting porosity and pe:~meability.
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From page 48... ...
with varyir~,+ accounts of micaceous material, numerous ~ron-ores,; and 19-non~opaque heavy minerals. of mixed deriva.tion..
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From page 49... ...
78~83, 1937 . Studies of the heavy minerals in 9 samples of Recent sand, 18 samples of Glacial sand, and 8 samples of Cretaceous sand reveal that the Glacial saws and the Recent lake and river sands derived from glacial deposits are characterized privily by hornblende, pyroxenes, garnet and n~ag3:~etite' usually in comparatively large ~mounts, with minor amounts of epidote, tulip;, Id zircon.
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From page 50... ...
Measuriame~ of compone:its of thin sections ^.
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From page 51... ...
1761-l 794, 1939. Includes a section on -the mineral composition (worked out from thin sections)
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From page 52... ...
H ~ H.~Tarol;he~mal tor=tion or clay Minerals in the laboratory.
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From page 53... ...
592-615, 1939. lye mineral analysis of sediment involves preparation of the sample, both disagg;r~ation and clarification of the grains, concentration by heavy liquids (or other m~sJ of the rare accessory minerals ("heavy mammals")
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From page 54... ...
110. Reed, John C.: Eve study of accessory minerals in igneous and met~mo~hi c rocks.
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From page 55... ...
Dana: Mineral composition of '{issi ss~pp' River sails.
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From page 56... ...
The light separate contained some 16 constituents bible the hear separate consisted of 37 mineral species or va~etiese The tr~.uencies were determined by counting; 300 to 600 grins. Stalked progressive do~streem changes in mineral composition were lacking.
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From page 57... ...
29, 196-200, 1938. Acc=nt of methods used f03: computing grain-size distribution and heavy mineral content of sand sediments.
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From page 58... ...
a_ 58 -E'rh~bit B .
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From page 59... ...
Data plotted were (~) "richness of the suites (of heavy minerals)
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From page 60... ...
. The light arid heavy mineral content of 94 samples is tabulated.
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From page 61... ...
There is a marked difference irk the mineral content of the sands derived fr~ the rocks of the four principal physiographic provinces viz. ~ the sedimentary rocks of the Valley and Ridge, the igneous rocks of the Blue Ridge, the metamorphic rocks of the Piedmont, and the sedimentary rocks of the Coastal Plain - Anthor's abstract.
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From page 62... ...
The tou~line of Fanatic sources ~s angular, whereas that of sedimentary sources i s mb-angulp;r to s~b-round ~ But as the towline of the latter type ~ very =all, the cons~d(erable roundness of the larger grains of this species at several loca;tities is attributed to shore action. Shore action rather than rearer action ~ $ concluded to be tile true rounding agent.
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From page 63... ...
Glauconite is formed from clay matter Within cavities in fossils, such as forami~iife-~-a,: the c=~1 of sponge spicules, etc., frown facoal pellets, and from eerily hydrated siliceous materials such as Volcanic glass and opaline silica and also OFF alteration of feldspar, pyroxene and mica. Taka~shi rejects the theory that g;laucon~te is the alteration product of any particular mineral (suchas mea)
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From page 64... ...
The ~neral canposition cf sediments is treated ~ncidenta:Lly in a number of places in this book, particularly in the chapter on the classification of sediments ~d sedimentary rooks Id minerals. Some treatment is .- given also in the orbiters on the own of inorganic sediments fin connection with soils and weathering, 'n the chapter on the classic sediments and in the section dealing with sediments oP chemical Orion.
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From page 65... ...
. sands of the southern Paris basin, France, reveal an abundance of metamorphic minerals which indicates that the A:~norican massits of northwest Europe were the source of the material fo~ng the sediments, not- the Central rnassif no r the Votes Fountains .
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From page 66... ...
and the p,~,? roxene heavy minerals suggest that some of the material came from ~ southerly source and from the Thin sill and :Barrowdale lava nexuses in particular.
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From page 67... ...
Peter sandstone and of a balsam mount of loose grains from the Mordant sandstone shoved that the c-axis of the quartz grains tended to coincide with the long axis of the grains In the St. Peter, moreover, a de:tin~te fabric ~s evident and since the rock is Without other evidences of deforest' on, Wayland concluded that the fabric was a primary one produced by alignment of the e'~ng.ato quartz grails by the bottom currents at the time of deposit, on.
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From page 68... ...
I`~rsden, ~A discussion of some of the errors introduced by accessory mineral separations," and a similar paper by Freak F Grout, "Accuracy of accessory mineral methods." These authors discuss, with ample e~imental data, the problems of field sa;rap.1e, crushing and screening, sample splitting, washing out fines, mineral separations tic, dielectric, adhesion :methods, screenings;, heavy 1,qmd separations, and char cal methods)
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From page 69... ...
Ate manner of occurrence nnd tomato of the scattered crystals at primary iron sulfide, non pyrite, wi 11 be of int emit to sedimentologi st.s . Irene rocks have bee Objected to low grade metamorphism.
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