Distribution of clay minerals in Early Jurassic Peritethyan seas: Palaeoclimatic significance inferred from multiproxy comparisons

Dera, Guillaume; Pellenard, Pierre; Neige, Pascal; Deconinck, Jean‐François; Pucéat, Emmanuelle; Dommergues, Jean‐Louis

doi:10.1016/j.palaeo.2008.09.010

Cited by 240 publications

(166 citation statements)

References 59 publications

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“…By con trast to Thiry (2000), many re cent stud ies sug gest that clay min er als de pos ited in sed i mentary bas ins are re li able prox ies for high-fre quency cli mate fluctu a tions (e.g., Dera et al, 2009;Srivastava et al, 2010;Alizai et al, 2012;Moiroud et al, 2012;Das et al, 2013). Dera et al (2009) sug gested that for ma tion of kaolinite in trop i cal soils and its de po si tion in ma rine sed i ments could be al most con tem pora ne ous, i.e. the elapsed time might have been less than 100 ka, dur ing the Early Ju ras sic in the Peritethyan do main.…”

Section: Catastrophic Climatic Eventsmentioning

confidence: 99%

“…Clay de pos its in sed i men tary bas ins rep re sent a fi nal product of the con ti nen tal weath er ing pro cess and they may re veal cli ma tic fluc tu a tions on con ti nents, if diagenetic trans for ma tions were not very sig nif i cant (e.g., Singer, 1984;Chamley, 1989;Ruffell et al, 2002;Ahlberg et al, 2003;Deconinck et al, 2003;Raucsik and Varga, 2008;Brañski, 2009Brañski, , 2010Brañski, , 2012Dera et al, 2009;Hesselbo et al, 2009). In par tic u lar, the vari a tions in de tri tal kaolinite con tent in the clay frac tion are con sid ered as a re li able proxy for hu mid ity.…”

Section: Introductionmentioning

confidence: 99%

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Climatic disaster at the Triassic-Jurassic boundary - a clay minerals and major elements record from the Polish Basin

Brański

2014

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1 Pol ish Geo log i cal In sti tute -Na tional Re search In sti tute, Rakowiecka 4, 00-975 Warszawa, Po land Brañski, P., 2014. Cli ma tic di sas ter at the Tri as sic-Ju ras sic bound ary -a clay min er als and ma jor el e ments re cord from the Pol ish Ba sin. Geo log i cal Quar terly, 58 (2): 291-310, doi: 10.7306/gq.1161The Tri as sic-Ju ras sic bound ary in ter val (ca. 201 Ma) was a time of sud den global en vi ron men tal changes trig gered by Pangea breakup and Cen tral At lan tic Mag matic Prov ince de vel op ment. The bulk-rock min er al ogy, clay min er al ogy and major el e ment geo chem is try of 87 con ti nen tal mudrock sam ples col lected from four bore hole cores yield in for ma tion on Rhaetian-ear li est Hettangian palaeoclimatic changes in the Pol ish Ba sin. Dur ing the Rhaetian, smectite pre pon der ance was re placed by kaolinite and illite dom i na tion. This fun da men tal shift in clay min eral as sem blages (sup ported by ma jor el ement data) in di cates very sig nif i cant change in cli mate hu mid ity. More over, some beds in the Zagaje For ma tion (Up per Rhaetian-Lower Hettangian) are par tic u larly rich in kaolinite in di cat ing ex treme chem i cal weath er ing in hu mid-sub trop i cal to trop i cal cli mate ep i sodes in the af ter math of pow er ful warm ing and abun dant rain fall. Im por tantly, the first dis tinct kaolinite en rich ment ap pears al ready in the Lower Rhaetian Wielichowo Beds. In ad di tion, abrupt and ep i sodic shifts in the kaolinite-illite ra tio and in val ues of weath er ing in di ces point to pro found cli mate de sta bi li sa tion and a se quence of fre quent, cat a strophic cli ma tic re ver sals in the Late Rhaetian and at the Tri as sic-Ju ras sic bound ary. These re sults are gen er ally consis tent with car bon iso tope re cords in sec tions world wide.Key words: Tri as sic-Ju ras sic bound ary, clay min er als, ma jor el e ments, weath er ing re gime, palaeoclimatic shifts, Pol ish Ba sin.

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Section: Catastrophic Climatic Eventsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Climatic disaster at the Triassic-Jurassic boundary - a clay minerals and major elements record from the Polish Basin

Brański

2014

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“…PALAEOGEOGRAPHICAL POSITION OF THE AREA Ka olin weath er ing crusts formed dur ing the lat est Tri as sic to Early Ju ras sic world wide can be po ten tially used as cli ma tic and palaeogeographic proxy of the T/J bound ary se quence and long-dis tance ba sin cor re la tion (Ruffell et al, 2002;Prochnov et al, 2006;Dera et al, 2009;Michalík et al, 2010;Zajzon et al, 2012). In Cen tral Eu rope, the ka olin prov ince com prised a part of the Bo he mian Mas sif and part of the Bal tic Shield (e.g., Chamley, 1989;Kraus, 1989;Ahlberg et al, 2002Ahlberg et al, , 2003Brañski, 2009).…”

Section: Burial History and Palaeo-reconstructionmentioning

confidence: 99%

“…The pres ence of kaolinite and smectite re flects the weath er ing re gime in a par tic u lar sed i mentary ba sin, and al lows its cor re la tion with pat terns in neigh bouring ar eas (Weaver, 1989;Ahlberg et al, 2003;Ruffell et al, 2002;OErodoñ et al, 2006;Dera et al, 2009;Zajzon et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Latest Triassic climate humidification and kaolinite formation (Western Carpathians, Tatric Unit of the Tatra Mts)

Lintnerová¹,

Michalı́k²,

Uhlík³

et al. 2013

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The Tomanová For ma tion, of Rhaetian age, over ly ing the Norian Carpathian Keuper in the Tatra Mts. is built of cy clic parasequences of mudstones and sand stones. Quartz (15 to 70 wt.%), kaolinite (13 to 46 wt.%) and 2:1 Al dioctahedral phyllosilicates (dioct 2:1: mus co vite, illite, illite/smectite: 5 to 39 wt.%) rep re sent the ma jor min eral phase. The kaolinite/dioct 2:1 ra tio de creases up wards in the sec tion (from 4.3 to 0.5) and sig nals vari abil ity in weath er ing/ero sion in ten sity and changing wa ter sa lin ity. Ma jor and trace el e ments (LILE, HSFS, REE) in di cate a uni form source -fel sic rocks lo cated prob a bly in the Vindelician High lands. The sed i men ta tion rate (83 mm/ky) was con trolled by cli mate. Al ter na tion of dry and hu mid pe riods is refered by sed i men tary tex tures and by ma tu rity of quartz (ae olian vs. flu vial grains), and or ganic mat ter con tent and com po si tion (C org and d 13 C org ). Authigenic sid er ite or bethierine doc u ments wet and re duced con di tions in the up per part of the Tomanová For ma tion. The sedimention rate of the ma rine Dudzinec For ma tion at tained 25 mm/ka and the char ac ter of cy cles pre served in the se quence is sim i lar as that of the Tomanová For ma tion (fin ing up wards parasequences). How ever, the dif fer ent clay min er al ogy, the re cy cled char ac ter of the sil i cates, the dif fer ent d 13 C org and el e vated imput of car bon ate detri tus with spe cific C and O iso to pic pat terns doc u ment a dis con ti nu ity in the sec tion. The transgressive char ac ter of the Dudzinec Fm. was de duced from the strati graphic dis tri bu tion and en vi ron men tal char ac ter is tics of the ben thic foraminifera pres ent. Involutinids and spirillinids dom i nate in the lower part, endothyrinids gov ern the mid dle part, and in the up per part nodosariids and Ammodiscus-type micro fauna oc cur. These age-di ag nos tic microfossils in di cate a late Rhaetian age. Sea level rise in the Tatric Zone trig gered by ther mal ex pan sion of the Cen tral At lan tic Rift was grad ual, be ing af fected by in put of ter res trial clastic sed i ment both by fresh wa ter and by wind. The Tatric Tri as sic se quence in the West ern Carpathians helps un der stand ing of the de vel op ment of sed i men ta tion, palaeoclimate (kaolinite weath er ing), and palaeo ge ogra phy of the north ern most Tethyan Do main.

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“…This interpretation implies runoff from a weathered hinterland and long transport over the platform. However, kaolinite settles faster than smectite and illite on behalf of its coarser grain size (Brigaud et al, 2009;Dera et al, 2009). Thus, kaoliniterich assemblages can also simply indicate proximity to the source area.…”

Section: Clay Mineralsmentioning

confidence: 99%

The lost paleosols: Masked evidence for emergence and soil formation on the Kimmeridgian Jura platform (NW Switzerland)

Waite

Marty²,

Strasser

et al. 2013

Palaeogeography, Palaeoclimatology, Palaeoecology

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Lagoonal carbonates of Kimmeridgian age in NW Switzerland formed in a tropical epeiric sea and exhibit indicators of subaerial emergence such as tidal biolaminites, desiccation cracks, flat pebble conglomerates, and fenestral structures. Additionally, 30 dinosaur tracksites from at least six stratigraphic intervals indicate repeated formation of land bridges between the platform and adjacent massifs. Populations of herbivorous and carnivorous dinosaurs necessitate substantial vegetation and consequently a soil cover, but no striking evidence of paleosols have been found within the track bearing sequences. However, two stratigraphic levels exposed in nine outcrops exhibit distinctive hardgrounds that experienced early meteoric diagenesis during times of emergence. Initial induration began with the precipitation of thin micritic meniscus cements. Contemporaneously meteoric waters completely dissolved all aragonite leaving large voids. Iron-hydroxides were precipitated in the uppermost 7-10 cm where they impregnated the porous micrite and constituted a separate cement generation, which caused a penetrative dark red staining. These aspects are suggestive of the formation of Mediterranean-type red soils on the emerged platform. During transgression, the soil was eroded and wavecut hardgrounds were superimposed on the hardgrounds formed during regression. Erosion is evidenced by micro-karst, truncated Gastrochaenolites isp. borings and the physical removal of steinkerns. The eroded material including floral remains provided surplus nutrients leading to eutrophication. This food-rich environment supported the mass-occurrence of gastropods in the nerineoid limestones and oysters (Nanogyra sp.) in the Virgula Marls.

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Distribution of clay minerals in Early Jurassic Peritethyan seas: Palaeoclimatic significance inferred from multiproxy comparisons

Cited by 240 publications

References 59 publications

Climatic disaster at the Triassic-Jurassic boundary - a clay minerals and major elements record from the Polish Basin

Climatic disaster at the Triassic-Jurassic boundary - a clay minerals and major elements record from the Polish Basin

Latest Triassic climate humidification and kaolinite formation (Western Carpathians, Tatric Unit of the Tatra Mts)

The lost paleosols: Masked evidence for emergence and soil formation on the Kimmeridgian Jura platform (NW Switzerland)

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