干旱区生态环境知识资源中心(Arid): Microtexture and U-Pb geochronology of detrital zircon grains in the Chachalacas beach, Veracruz State, Gulf of Mexico

Arid

DOI	10.1002/gj.3984
	Microtexture and U-Pb geochronology of detrital zircon grains in the Chachalacas beach, Veracruz State, Gulf of Mexico
	Armstrong-Altrin, John S.; Ramos-Vazquez, Mayla A.; Hermenegildo-Ruiz, Nadia Y.; Madhavaraju, Jayagopal
通讯作者	Armstrong-Altrin, JS
来源期刊	GEOLOGICAL JOURNAL
ISSN	0072-1050
EISSN	1099-1034
英文摘要	Microtextures, trace element concentrations, and U-Pb geochronology of detrital zircon grains recovered from the Chachalacas beach in the western Gulf of Mexico were investigated to infer palaeoenvironmental conditions. The mineralogy of bulk sediments revealed the presence of both chemically stable (titano-magnetite, zircon, and quartz) and unstable (amphibole and K-feldspar) minerals. The zircon grain microtextures or surface features were grouped as two types: (a) mechanical origin and (b) mechanical and chemical origin. The mechanical surface features such as V-marks, arc shaped, and meandering steps indicate a high-energy littoral and sub-aqueous marine environment. The chemical surface features like solution pits, precipitation, solution crevasses, adhered particles, and silica pellicle revealed a silica saturated marine environment. The well-rounded zircon grains with bulbous edges are characterized by long transport and aeolian origin. The Th/U ratio, a negative Eu (Eu/Eu* = similar to 0.08-0.72) and positive Ce (Ce/Ce* = >1) anomalies in the chondrite-normalized REE patterns of all zircon grains suggested that they primarily formed from magmatic processes. The detrital zircon grain U-Pb ages showed a wide variation from Cenozoic to Proterozoic with an abundance of Cenozoic ages (similar to 1.59-64.3 Ma;n= 44), interpreted as mixing of beach sediments by a longshore current. The comparison of zircon grain ages of this study with ages reported from the source terranes revealed that the likely source for Cenozoic zircon grains was the Eastern Alkaline Province of Mexico. Similarly, the Mesozoic (similar to 68.5-241.9 Ma) and Palaeozoic (similar to 253.2-284.8 Ma) zircon grains in the Chachalacas beach were possibly derived from the Valle de Huizachal and Mesa Central provinces. Proterozoic ages from similar to 574 to 1846 Ma indicated a probable contribution from the Oaxacan and Chiapas Massif complexes, which are dominated by Grenvillian basement rocks.
英文关键词	beach sediments detrital zircon grain U-PB ages REE SEM surface features
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000568731500001
WOS关键词	SCANNING-ELECTRON-MICROSCOPY ; QUARTZ GRAINS ; SOUTHERN MEXICO ; SURFACE TEXTURES ; WESTERN DESERT ; SAND GRAINS ; BAHIA KINO ; PROVENANCE ; GEOCHEMISTRY ; SEDIMENTS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328233
作者单位	[Armstrong-Altrin, John S.] Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Unidad Proc Ocean & Costeros, Ciudad Univ, Mexico City 04510, DF, Mexico; [Ramos-Vazquez, Mayla A.] Univ Nacl Autonoma Mexico, Posgrad Ciencias Mar & Limnol, Ciudad Univ, Mexico City, DF, Mexico; [Hermenegildo-Ruiz, Nadia Y.] Univ Nacl Autonoma Mexico, Fac Ingn, Div Ingn Ciencias Tierra, Ciudad Univ, Mexico City, DF, Mexico; [Madhavaraju, Jayagopal] Univ Nacl Autonoma Mexico, Inst Geol, Estn Reg Noroeste, Hermosillo, Sonora, Mexico
推荐引用方式 GB/T 7714	Armstrong-Altrin, John S.,Ramos-Vazquez, Mayla A.,Hermenegildo-Ruiz, Nadia Y.,et al. Microtexture and U-Pb geochronology of detrital zircon grains in the Chachalacas beach, Veracruz State, Gulf of Mexico[J]. Universidad Nacional Autónoma de México.
APA	Armstrong-Altrin, John S.,Ramos-Vazquez, Mayla A.,Hermenegildo-Ruiz, Nadia Y.,&Madhavaraju, Jayagopal.
MLA	Armstrong-Altrin, John S.,et al."Microtexture and U-Pb geochronology of detrital zircon grains in the Chachalacas beach, Veracruz State, Gulf of Mexico".GEOLOGICAL JOURNAL