Chronology of the Central Atlantic Magmatic Province: Implications for the Central Atlantic rifting processes and the Triassic–Jurassic biotic crisis

Nomade, Sébastien; Knight, Kim B.; Beutel, E. K.; Renne, Paul R.; Vérati, Chrystèle; Féraud, Gilbert; Marzoli, Andréa; Youbi, Nasrrddine; Bertrand, Hélène

doi:10.1016/j.palaeo.2006.06.034

Cited by 218 publications

(141 citation statements)

References 50 publications

Supporting

Mentioning

130

Contrasting

Unclassified

Order By: Relevance

“…The Foum Zguid dyke located south of Zenaga and Saghro inliers and the Igherm dyke which is located between the Kerdous and Agadir-Melloul inliers. Foum Zguid dyke produces a plagioclase 40 Ar/ 39 Ar age of 196.9 ± 1.8 Ma (Sebai et al 1991;Touil et al 2008), which is comparable with the overall age of the CAMP event which is estimated at 199.1 ± 1 Ma (Marzoli et al 2004;Knight et al 2004;Nomade et al 2007;Verati et al 2007). The Igherm dyke has not been dated but according to its geological setting; it is considered as coeval to the Foum Zguid dyke.…”

Section: Model Constraintsmentioning

confidence: 59%

Post-Variscan evolution of the Anti-Atlas belt of Morocco constrained from low-temperature geochronology

Gouiza

Charton

Bertotti

et al. 2016

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

Section: Model Constraintsmentioning

confidence: 59%

Post-Variscan evolution of the Anti-Atlas belt of Morocco constrained from low-temperature geochronology

Gouiza

Charton

Bertotti

et al. 2016

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

“…The Central Atlantic magmatic province produced voluminous tholeiitic volcanism at c. 200 Ma (Nomade et al, 2007), which has been widely linked to the arrival of a mantle plume (Oyarzun et al, 1997), whilst the Karoo -Ferrar provinces had major basaltic volcanism at c. 182 Ma (Riley and Knight 2001). The Chon Aike province was almost entirely silicic and was characterized by two main peaks of volcanism at c. 183 Ma and c. 170 Ma (Pankhurst et al, 2000;Hunter et al, 2006).…”

Section: Coincidence Of Plume Events and Accretionmentioning

confidence: 99%

Untitled

2007

Rb-Sr, Plumes, Accretion, Gondwana

View full text Add to dashboard Cite

Five of six Rb-Sr muscovite mineral isochron ages from the Scotia Metamorphic Complex of the South Orkney Islands, West Antarctica, average 190 ± 4 Ma. The muscovite ages are interpreted to date foliation-formation and thus also accretion and subduction at the Gondwana margin. Coincident picrite and ferropicrite magmatism, indicative of melts from deep-seated depleted mantle, permits a causative link between accretion and the arrival of the Karoo -Ferrar -Chon Aike mantle plume in the Early Jurassic. Three biotite Rb-Sr mineral isochron ages are consistently younger and average 176 ± 5 Ma. The biotite ages may record post-metamorphic cooling or more likely retrogressive metamorphic effects during uplift.

show abstract

“…Some au thors have fo cused on ocean acid i fi ca tion and a biocalcification cri sis (Hautmann, 2004;Hautmann et al, 2008;Racki, 2010;Richoz et al, 2012). However, in creas ing pre ci sion of strati graphic cor re la tion links these events to the on set of CAMP vol ca nism (Marzoli et al, 2004(Marzoli et al, , 2011Nomade et al, 2007;Cirilli et al, 2009;Jourdan et al, 2009;Deenen et al, 2010;Kozur and Weems, 2010;Ruhl et al, 2010;Schoene et al, 2010;White side et al, 2010;Blackburn et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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

Brański

2014

View full text Add to dashboard Cite

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.

show abstract

Chronology of the Central Atlantic Magmatic Province: Implications for the Central Atlantic rifting processes and the Triassic–Jurassic biotic crisis

Cited by 218 publications

References 50 publications

Post-Variscan evolution of the Anti-Atlas belt of Morocco constrained from low-temperature geochronology

Post-Variscan evolution of the Anti-Atlas belt of Morocco constrained from low-temperature geochronology

Untitled

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

Contact Info

Product

Resources

About