Volcanic geological features and geochemical implications of Late Jurassic volcanoes in Duolun volcanic‐eruption basin of Inner Mongolia, China

2020 ◽  
Author(s):  
Lingfei Han ◽  
Zhida Bai
Keyword(s):  
Volcanic Eruption ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
Geological Features

New winter crane flies (Insecta: Diptera: Trichoceridae) from the Jurassic Daohugou Formation (Inner Mongolia, China) and their associated biota

2006 ◽  
Vol 43 (1) ◽  
pp. 9-22 ◽  
Author(s):  
Junfeng Zhang
Keyword(s):  
New Species ◽  
Middle Jurassic ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
Sedimentary Rocks ◽  
New Genera ◽  
Crane Flies ◽  
Geological Age ◽  
Wide Range ◽  
Biostratigraphic Correlation

Four extinct new species referable, respectively, to three extinct new genera within Trichoceridae have been recovered from the Jurassic Daohugou Formation in Ningcheng, Chifeng, Inner Mongolia, China: Archaeotrichocera ephemera gen. et sp. nov., Tanyochoreta integera gen. et sp. nov., Tanyochoreta chifengica sp. nov., and Sinotrichocera parva gen. et sp. nov. The specimen described earlier as trichocerids from China, Mesotrichocera laiyangensis Hong and Wang 1990, does not belong to this family. The Daohugou biota comprises a wide range of vertebrate and invertebrate organisms that inhabited, a small lake, luxurious everglade, streams, and forest with volcanoes nearby. The Daohugou Formation can be compared to the Karabastau and Haifanggou formations based on biostratigraphic correlation. The geological age for trichocerid-bearing nonmarine volcano-sedimentary rocks may be latest Middle Jurassic (Callovian) or earliest Late Jurassic (Oxfordian) rather than early–middle Middle Jurassic or Early Cretaceous.

Geological features and genesis of the Bayan Obo REE ore deposit, Inner Mongolia, China

1992 ◽  
Vol 7 (5) ◽  
pp. 429-442 ◽  
Author(s):  
Yuan Zhongxin ◽  
Bai Ge ◽  
Wu Chenyu ◽  
Zhang Zhongqin ◽  
Ye Xianjiang
Keyword(s):  
Inner Mongolia ◽  
Ore Deposit ◽  
Geological Features ◽  
Bayan Obo

Superimposed deformation of the Solonker Belt and nearby regions in western Inner Mongolia, China

2018 ◽  
Vol 156 (5) ◽  
pp. 811-832 ◽  
Author(s):  
GUANZHONG SHI ◽  
CHAO LIANG ◽  
HUA WANG ◽  
CHUANYAN HUANG
Keyword(s):  
Structural Analysis ◽  
Tectonic Evolution ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
Middle Triassic ◽  
Orogenic Belt ◽  
Far Field ◽  
Quartz Veins ◽  
Central Asian ◽  
Two Stages

AbstractThe deformation of the Solonker Belt and nearby regions is helpful for understanding the tectonic evolution of the Central Asian Orogenic Belt. This study carried out structural analysis in the Mandula and Ganqi areas of western Inner Mongolia, including the Solonker Belt, the Southern Orogenic Belt and the northern Yinshan Belt (Langshan range). Our results reveal that the Solonker Belt, the Southern Orogenic Belt and the northern Yinshan Belt underwent two stages (D1 and D2) of deformation during the Mesozoic period. The D1 stage produced the NNE-directed thrusts and asymmetric folds, indicating a NNE–SSW contraction. The northern Yinshan Belt, the Southern Orogenic Belt and the Solonker Belt formed as a series of NNE-verging tectonic nappes. The D2 stage developed the NE-trending folds and the SE- or NW-directed thrusts that cross-cut the D1 structures. The two events of nearly orthogonal or oblique shortening gave rise to the superimposed structures (e.g. fold interference patterns). The quartz veins that filled the fractures of the D1 deformation contain zircons of Middle Triassic U–Pb ages. The new dating data, along with the regional sedimentary hiatus, led us to infer that the D1 stage of deformation occurred in Middle Triassic time and the D2 stage occurred in Late Jurassic time. We consider that the D1 stage of deformation resulted from a convergent event, which might be related to the closure of the Palaeo-Asian Ocean or limited, narrow ocean basins; and the D2 stage of deformation was the far-field result of subduction of the Palaeo-Pacific Ocean and the closure of the Mongol-Okhotsk Ocean.

Are contemporary whiteflies “living fossils”? Morphology and systematic status of the oldest representatives of the Middle-Late Jurassic Aleyrodomorpha (Sternorrhyncha, Hemiptera) from Daohugou

2019 ◽  
Vol 2 (2) ◽  
pp. 171-182
Author(s):  
JOWITA DROHOJOWSKA ◽  
PIOTR WEGIEREK ◽  
GREGORY A. EVANS ◽  
DIYING HUANG
Keyword(s):  
New Species ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
New Genus ◽  
Upper Jurassic ◽  
Morphological Features ◽  
Taxonomic Position ◽  
Systematic Status ◽  
Living Fossils

A new genus Sinicoselis gen. nov., with new species Sinicoselis weberi gen. and sp. nov. is described from Middle-Upper Jurassic, Daohugou Bed, Inner Mongolia, China. It is the oldest representative of whiteflies placed in the subfamily Bernaeinae. Its morphological features and taxonomic position with respect to other aleyrodids from the subfamilies Bernaeinae and Udamoselinae are briefly discussed.

A new genus and species of damsel-dragonfly from the Middle Jurassic of Inner Mongolia (Odonata: Campterophlebiidae)

2020 ◽  
Vol 3 (4) ◽  
pp. 357-360
Author(s):  
ANDRÉ NEL ◽  
DIYING HUANG
Keyword(s):  
Middle Jurassic ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
New Genus ◽  
Lower Jurassic ◽  
Northeastern China ◽  
Large Species ◽  
New Genus And Species ◽  
Unique Shape ◽  
Anal Area

The Campterophlebiidae is the largest family of fossil damsel-dragonflies, containing more than 60 species described from Lower Jurassic–Lower Cretaceous strata of Europe and Asia. This group is especially diverse in the Middle–Late Jurassic strata in Inner Mongolia, northeastern China, with some very large species (Zhang et al., 2006, 2008, 2013; Nel et al., 2007, 2008, 2009; Petrulevičius et al., 2011; Li et al., 2013; Zhang et al., 2013; Zheng et al., 2016, 2017). Thus it is surprising that we found a new representative of these damsel-dragonflies, belonging to a group of genera characterized by a very particular shape of the forewing cubito-anal area. This fossil has a unique shape of the forewing median vein, allowing its attribution to a new genus and species. It increases our knowledge about the palaeobiodiversity of this impressive group of Odonata.

New materials of trichocerid and ptychopterid dipterans from the earliest Late Jurassic of Jiyuan Basin, China

2020 ◽  
Vol 3 (5) ◽  
pp. 461-465
Author(s):  
YU-MING LIU ◽  
DI-YING HUANG
Keyword(s):  
Early Cretaceous ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
North China ◽  
Upper Jurassic ◽  
New Materials ◽  
Fossil Species ◽  
Small Family ◽  
Crane Flies

Trichoceridae, species of which are commonly known as winter crane flies, is a rather small family that includes 79 fossil species and ca. 160 extant ones (Krzemińska et al., 2009; Dong et al., 2014). Among them, 10 species have been described from the Middle-Upper Jurassic Haifanggou Formation at Daohugou, Ningcheng County, Inner Mongolia, North China (Zhang, 2006; Krzemińska et al., 2009; Liu et al., 2012; Dong et al., 2014). The subgenus Archaeotrichocera of Eotrichocera contains seven species, described mainly from the Middle–Late Jurassic Daohugou biota of China (Zhang, 2006; Krzemińska et al., 2009; Dong et al., 2014) with one species found from the Early Cretaceous of Kempendyay in Yakutia, Russia (Krzemińska et al., 2009).

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