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Acta Geologica Sinica(English Edition) 1988年第3期1卷 249-266页

作者： wang qichao hebei regional geological surveying party, langfang, hebei hebei regional geological surveying party Langfang Hebei

According to differences of the protolith formations, the early Precambrian strata in the northern part ofthe North China platform may be divided into the stable stratigraphic region in the west and the mobilestratigraphic region in the east. Based on unconformities, either stratiragphic or tectonic, as well as significantmetamorphic thermal events, the two regions may be stratigraphically defined as follows: 1) the middleArchaean Fuping Supergroup composed of the Chenzhuang and Wanzi Groups (stable areas), and the middleArchaean Qianxi Group (mobile area), whose upper limits are all dated at 2800 Ma; and 2) the upper ArchaeanWutai Supergroup composed of the Longquanguan, Shizui and Taihuai Groups (stable areas), and the upperArchaean Zunhua, Dantazi and Zhuzhangzi Groups (mobile areas). whose upper limits are all dated at 2500Ma. A correlation of the above-mentioned units is also made. The lower Proterozoic Hutuo Group of the sta-ble region is adjusted to comprise the Gaofan, Doucun, Dongye and Guojiazhai Groups. The upper limit of theGaofan Group is placed at 2350 Ma, Dongye 1850 Ma and Guojiazhai (the lower limit of the Changcheng Sys-tem) 1700 Ma.

关键词： meta the Yanshan Region and the Eastern Sector of the Yinshan Mountains The Early Precambrian Rocks,Their Ages,Division and Correlation of the Taihang-Wutai Region

AN IMPORTANT DEVONIAN-CARBONIFEROUS BOUNDARY STRATOTYPE IN NERITIC FACIES OF YISHAN COUNTY, GUANGXI

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微体古生物学报 1985年第1期 40-46页

作者： wang Cheng-yuan (Nanjing Institute of Geology and Palaeontology, Academia Sinica) Yin Bao-an (regional geological surveying.Team, Guangxi Province)

In 1979,the IUGS Working Group on the Devonian-Carboniferous boundary made an outstanding resolution that the Devonian-Carboniferous boundary should be chosen at the first appearance of the conodont Siphonodella sulcata within the evolutionary lineage from S. praesulcata to S. sulcata. Since then, the Working Group have visited several sections in different countries and discussed the attributes and detractions of each section. After thorough discussion and deliberation, the Working Group recommended four sections as condidates for the international Devonian-Carboniferous boundary stratotype, namely Hasselbachtal, Kija, Berchogur and Muhua, of these four the Muhua section has been ranked as the leading contender of the candidates.

关键词： Carboniferous sections evolutionary appearance margin thorough strata discussion visited Upper

黔中广顺一带梁山组遗迹化石的首次发现及遗迹相探讨

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沉积与特提斯地质 1989年第5期10卷 26-32页

作者：王尚彦贵州区域地质调查大队

在1:50000广顺幅区调过程中,首次发现广顺地区下二叠统粱山组有大量丰富的遗迹化石存在。本文特作以报道,并为该区早二叠世古环境分析提供了新的地质资料。一、广顺地区梁山组简介梁山组为早二叠世栖霞早期的沉积地层。它与下伏地层上... 详细信息

在1:50000广顺幅区调过程中,首次发现广顺地区下二叠统粱山组有大量丰富的遗迹化石存在。本文特作以报道,并为该区早二叠世古环境分析提供了新的地质资料。一、广顺地区梁山组简介梁山组为早二叠世栖霞早期的沉积地层。它与下伏地层上石炭统马平组(主要由亮晶生物屑灰岩、团粒灰岩组成)呈不整合接触;与上覆下二叠统栖霞组(由泥—细晶生物屑灰岩夹钙质页岩、泥灰岩、燧石灰岩组成)呈整合接触。梁山组主要由石英砂岩、页岩和粘土岩组成,也见有生物屑硅质岩。

关键词：遗迹相遗迹化石下二叠统整合接触潜穴系统钙质页岩上石炭统岩组黔中栖霞组

An early aged ophiolite in the Western Kunlun Mountain, northwestern Tibet plateau and its tectonic implications

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An early aged ophiolite in the Western Kunlun Mountain, nort...

Effects of Enclosure on Grassland Ecological and Economic Benefits in Northern China

2004年全国岩石学与地球动力学研讨会

作者： Xuchang XIAO Jun wang Wenhua Ji Li Su 1. Institute of Geology, Chinese Academy of geological Sciences (CAGS) 2. regional geological surveying party of Shanxi Provence 3. Xi''An Institute of Geology and Mineral Resources

＜正＞ The early aged ophiolites have attracted the studying from many geologists in recent decades （Colombo C. G. et al, 2001, Scarrow J. H. et al., Timothy M. Kusky et al., 2001.....）, because the early aged ophiolites can provide the information about the ancient oceanic processes relevant to the evolution of the plate tectonics in the early period of the earth, and also concem such problems as whether there existed a "Protero-Tethys" and the break-up and convergence of the Rodinia Supercontinent in the NW Tibet plateau. This paper reveals a definite complete ophiolite, the "Kudi- ophiolite" of late-Proterozoic-early Paleozoic, in the Westem Kunlun Mtns, NW. Tibet plateau, and reports the recent isotopic ages of 510±4Ma. And 502±13Ma （U-Pb ratio in zircon） for the middle and upper portions of the mafic cumulates of the Kudi-ophiolite, operated at the most powerful dating tool, the SHRIMP-Ⅱ. The geochemical and geochronological data integrating with the geological setting suggest that the Kudi-ophiolite might have formed in an Archipelago not in a vast oceanic basin, the so-called Protero-Tethys, and was tectonically emplaced during the early Paleozoic in the NW. Tibet plateau.

关键词：

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Chinese Geographical Science 2024年第1期34卷 67-78页

作者： HU Bo WEN Qingke XI Fengjiang LI Mengyao wang Libing REN Yuejuan Aerospace Information Research Institute Chinese Academy of SciencesBeijing100094China University of Chinese Academy of Sciences Beijing100049China Inner Mongolia Remote Sensing Center Co. Ltd.Huhhot010000China Xilinhot the Maodeng pasture Xilinhot026000China China University of Mining and Technology Xuzhou221116China Shanxi Provincial Key Lab of Resources Environment and Disaster MonitoringCoal Geological Geophysical Exploration Surveying&Mapping Institute of Shanxi ProvinceJinzhong030600China

Grasslands in northern China serve the country as both an ecological barrier and a livestock production ***,installing enclosures has been becoming the major grassland restoration measure adopted by many local ***,the effects of restoration on both ecological and production benefits of grassland remain unclear for implemented grassland restoration ***,a representative rangeland in northern China,the Maodeng pasture in Inner Mongolia Autonomous Region was selected as the study area,and remote sensing monitoring analyses were carried out to quantify the ecological benefits and economic benefits from 2015 to *** results showed that:1) in terms of ecological benefits,the grassland area with a grassland coverage rate of more than 60% accounts for 32.3% of the regional area,and 86.4% of its grassland grew significantly better than the same period in2015,showing a significant improvement in grassland *** the average amount of carbon per unit area as the ecological benefit evaluation index,it increased by 27.1% to 32.48Tg C/yr from 2015 to 2021.2) In terms of economic benefits,both theoretical grass production and livestock carrying capacity increased from 2015 to *** to 2015,the theoretical grass production in 2021 increased by 24.8% to 71 900 *** livestock carrying capacity reached 52 100 sheep units in 2021,nearly 11 000 sheep units more than that in *** the study period,multiple economic indicators(on a per capita basis of permanent residents) for the pastoral area of Xilinhot City to which the Maodeng pasture belongs,have grown *** capita total income rose from 29 630 yuan(RMB) in2015 to 62 859 yuan(RMB) in *** on grassland resources to develop the pastoral ecology also broadens the potential economic development ***,the establishment of the reserve and the experiment of implanting an enclosure policy have had a significant and positive impact on Maodeng pasture’s develo

关键词： enclosure grassland ecological benefit economic benefit Maodeng pasture Inner Mongolia northern China

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宜兴地区恐龙蛋化石的发现及其意义

江苏地质 1990年第1期14卷 29-30页

作者：王万柏江苏省地质矿产局区调队

宜兴市张渚镇北牛犊山出露了一套陆相红层,由于一直未获化石,时代归属及区域对比分歧较大。1973年我队将其归为晚白垩世浦口组:1978年我队编制江苏省及上海市区域地质志时,将其归为西横山组。近几年笔者和本队部分同志在该区进行区域地... 详细信息

宜兴市张渚镇北牛犊山出露了一套陆相红层,由于一直未获化石,时代归属及区域对比分歧较大。1973年我队将其归为晚白垩世浦口组:1978年我队编制江苏省及上海市区域地质志时,将其归为西横山组。近几年笔者和本队部分同志在该区进行区域地质调查时,于该红层中采获了恐龙蛋化石,因而提出这一红层时代应归属于晚白垩晚期赤山组。一、地层剖面赤山组(K_2(?)) 厚>38.8m(11)灰紫包细粒岩屑砂岩(未见顶)。 >5.3m⑩紫红色含角砾细粒长石岩屑砂岩 2.8m⑨浅紫色角砾岩 4.6m⑧灰紫色细粒长石岩屑砂岩。2.4m⑦紫色含角砾长石岩屑砂岩。1.

关键词：恐龙蛋化石宜兴地区晚白垩纪

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四川古蔺下奥陶统桐梓组笔石的发现

古生物学报 1981年第4期 349-352页

作者：王钢贵州省地质局区域地质调查队

1978年7月,笔者与龚联瓒等同志在四川古蔺大坪测制奥陶纪地层剖面时,于下奥陶统桐梓组近顶部采得反称笔石科的笔石。计有Adelograptus sichuanensis sp. nov., Adelograptus minor sp. nov., Kiaerograptus? gulinensis sp. nov., Kiaerograptus? sp.等。这些笔石与三叶虫Tungizuella szechuanensis Sheng, T. kweichowensis sheng及腕足类Tritoechia cf. quebecensis Ulrich and Cooper, Lingulella sp.等产于同一层位。因此,该地桐梓组顶部可称为Adelograptus-Tungtzuella带,并与鄂西分乡组Acanthograptus sinensis带相当。

关键词：笔石桐梓组胞管下奥陶统新厂期反称笔石科树形笔石目四川古蔺

猫儿山、越城岭花岗岩类型及其片麻状花岗岩带的成因探讨

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广西地质 1986年第2期 79-84页

作者：梁廷苞王化云广西区域地质调查队广西区域地质调查队

猫儿山、越城岭花岗岩为桂北地区较大的岩体。对其成因前人曾有“壳源重熔型”、“陆壳改造型”等论述,多见于对南岭或广西花岗岩总论中,而以该两岩体为专题研究尚少;对岩体中片麻状花岗岩带成因前人曾有“动力变质”的论述。近年来有... 详细信息

猫儿山、越城岭花岗岩为桂北地区较大的岩体。对其成因前人曾有“壳源重熔型”、“陆壳改造型”等论述,多见于对南岭或广西花岗岩总论中,而以该两岩体为专题研究尚少;对岩体中片麻状花岗岩带成因前人曾有“动力变质”的论述。近年来有人提出过以“混合岩化成因系列的定向构造构成该片麻状带的主体”的成因论点“。通过1:5万

关键词：花岗岩类片麻状越城岭猫儿山混合岩化壳源黑云母花岗岩陆壳包体桂北地区

昆仑山—阿尔金山地区床板珊瑚新资料及其地层意义

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青藏高原地质文集

青藏高原地质文集 1983年第5期 170-186页

作者：王宝瑜新疆地质局区域地质调查大队

1971年新疆地质局区域地质调查大队(后简称地调队)有九个分队在昆仑一阿尔金山地区(新疆境内)开展了区调普查工作。先后在叶城～和田南部及且末县南部采到了相当数量的床板珊瑚化石。1972年新疆石油管理局地调处在叶城县西南和什拉甫地... 详细信息

1971年新疆地质局区域地质调查大队(后简称地调队)有九个分队在昆仑一阿尔金山地区(新疆境内)开展了区调普查工作。先后在叶城～和田南部及且末县南部采到了相当数量的床板珊瑚化石。1972年新疆石油管理局地调处在叶城县西南和什拉甫地区也采到了一些床板珊瑚,经室内详细鉴定,计有18属22种。其中新种10个,新亚种1个,未定种2 个。其名单如下:

关键词：床板珊瑚未定种新亚种且末县新疆地质托库孜达坂山腕足类石油管理局登记号托库孜达坂群

广西中峰、牛塘界、大湾等地花岗岩(类)微量元素特征

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物探与化探 1989年第1期13卷 53-60页

作者：王化云梁廷苞广西区调队

本文根据1:5万中峰公社幅及百里村幅区调资料,系统地采集了2080个岩石样品,用光谱半定量测定了22个元素。对不同时代不同期次花岗岩中微量元素的分布特征进行了研究,并对其含矿性进行了评价。

关键词：花岗岩微量元素广西