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Acta Geologica Sinica(English Edition) 2022年第6期96卷 2093-2104页

作者： ZHU Junbin LI Shan Sayed MURTADHA Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Geology Syiah Kuala UniversityBanda Aceh 23111Indonesia

The lack of preserved basement results in uncertain placements of many terranes in Southeast ***,we flag the first evidence of the oldest basement in Indonesian borneo,which can help locate terranes in borneo on the northern margin of Gondwana in the early Paleozoic and explain the regional tectonic setting of the *** schist samples from the Embuoi Complex in the Semitau Block,Northwest Kalimantan yielded zircon U-Pb dates of 453.3±1.9 Ma and 462.4±2.6 Ma,respectively,representing the formation time of the ***,internal structural and high Th/U ratios of zircons indicate that the protolith of schists is of magmatic *** zircons haveεHf(t)values of−4.1 to+1.1 and Hf model ages of 1.37–1.69 Ga,indicating they were derived from a mixed source of juvenile crust with old *** comparison of zircon age distribution,two-stage Hf model ages andεHf(t)variations of the early Paleozoic igneous rocks from Semitau with those of South China,Tengchong–Baoshan,and Indochina,the Semitau Block was most likely a part of or placed next to the Indochina Block of northern Gondwana during the early *** a similar tectono-magmatic pattern on northern Gondwana formed a prolonged early Paleozoic arc-related belt associated with subduction of the Proto-Tethyan Ocean.

关键词： basement N Gondwana Proto-Tethys Embuoi Complex early Paleozoic borneo

Trophic Ecology of Ansonia latidisca at Gunung Penrissen, Sarawak, North-Western borneo

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Asian Herpetological Research 2021年第2期12卷 250-260页

作者： Jia Jet ONG Indraneil DAS Institute of Biodiversity ami Environmental Conservation Universiti Malaysia SarawakKota Samamhan 94300SaniwakMalaysiii

Dietary data on Ansonia latidisca, the little known Bornean Rainbow Toad, are presented, through an investigation of a population at Gunung Penrissen, Sarawak, Malaysia(north-western borneo), at elevations between 1,100–1,229 m asl. Standard sampling techniques, including visual encounter surveys, were employed and individuals encountered stomach-flushed, ma rked, a nd released. The volume of food ingested by adults, apart from large females, did not vary monthly, and there was no significant difference between wet and dry periods, the dominance index between the two periods showing no significant difference, indicating that seasonal variation does not affect the dietary constitution of the species across months. The mean longest prey was recovered from a female in March, during the end of the wet season. Larger individuals did not consume larger prey in the species, although larger females did harvest the largest insects, and as may be expected, had fewer prey items in their stomachs at the time. Males fed on fewer prey items than females, the adult male diet predominantly comprised of members of the Hymenoptera, including formicids(ants), as indicated by percentage frequency of occurrence of 78.69, while for adult females, equivalent figure was 90.70. Coleopterans(beetles) were found secondary in importance(48.8% in females, 5.85% in males), the rest categorized as tertiary. Plant items(including bryophytes) had a high frequency of occurrence(23.3% in females, 4.64% in males). Females examined in the month of July had voluminous stomach contents, and may have eaten more to increase fat reserves for breeding in the upcoming wet season. Since the diet of all size classes consisted of hymenopterans(ants) and coleopterans, the study species is here considered to have a narrow food preference, and consequently, is a dietary specialist.

关键词： Ansonia latidisca borneo diet ecology Malaysia Sarawak

Chemical weathering in Malay Peninsula and North borneo:Clay mineralogy and element geochemistry of river surface sediments

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Science China Earth Sciences 2011年第2期54卷 272-282页

作者： WANG Hao LIU ZhiFei Edlic SATHIAMURTHY Christophe COLIN LI JianRu ZHAO YuLong State Key Laboratory of Marine Geology Tongji University Shanghai 200092 China Institute of Oceanography University Malaysia Terengganu Kuala Terengganu 21030 Malaysia Laboratoire IDES Bat. 504 UMR 8148 CNRS Universite de Paris XI Orsay 91405 France

Weathering products of silicate rocks are particularly useful for evaluating the continental chemical weathering on the Earth's surface and its *** mineralogy and major-element geochemistry of surface sediment samples collected in major rivers of Malay Peninsula and North borneo in the tropical Southeast Asian region are used to study the present chemical weathering process and its controlling factors of tropical *** results indicate that the clay mineral assemblage in Malay Peninsula consists dominantly of kaolinite(average 80%) and minor illite(average 17%),almost without chlorite and smectite,whereas in North borneo it consists mainly of illite and chlorite,with minor amounts of kaolinite(average 14%) and no *** contents of illite and chlorite in both Northwest and Northeast borneo are 84% and 87%,***-element geochemical results of both bulk and clay-fraction sediments show intensive chemical weathering degree for both ***,the chemical weathering degree is gradually strengthened from Northeast borneo,Northwest borneo,to Malay Peninsula,and it is extremely intensive in Malay *** results indicate that,in the tropical Southeast Asian region exampled by Malay Peninsula and borneo,climatic condition of tropical warm temperature and East Asian monsoon rainfall is the first-order controlling factor on the chemical weathering,resulting in intensive chemical weathering throughout tropical areas,and tectonic activity and lithology of parent rocks are subordinate factors,which still have an important impact on the weathering products,forming completely different clay mineral assemblages between Malay Peninsula and borneo.

关键词： clay minerals major elements fluvial sediments chemical weathering Malay Peninsula borneo

Causes of Cretaceous subduction termination below South China and borneo:Was the Proto-South China Sea underlain by an oceanic plateau?

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Geoscience Frontiers 2024年第2期15卷 100-124页

作者： Suzanna H.A.van de Lagemaat Licheng Cao Junaidi Asis Eldert L.Advokaat Paul R.D.Mason Mark J.Dekkers Douwe J.J.van Hinsbergen Department of Earth Sciences Utrecht UniversityUtrechtthe Netherlands College of Marine Science and Technology China University of GeosciencesWuhanChina Faculty of Science and Natural Resources Universiti Malaysia SabahKota KinabaluMalaysia

The South China,Indochina,and borneo margins surrounding the South China Sea contain long-lived arcs that became inactive at approximately 85 Ma,even though an embayment of oceanic crust(the‘Proto-South China Sea’)remained in the intervening *** oceanic crust eventually subducted in the Cenozoic below borneo and the Cagayan arc,while the modern South China Sea opened in its *** investigate the enigmatic cessation of Mesozoic subduction below South China and borneo,we studied a fragment of oceanic crust and overlying trench-fill sediments that accreted to NW borneo during the final stages of Paleo-Pacific *** on radiolarian biostratigraphy of cherts overlying the pillow basalts and detrital zircon geochronology of the trench-fill,we constrained the minimum age of the oceanic crust during accretion to 40 *** shows that subduction cessation was not related to ridge *** analysis of pillow basalts revealed an enriched mid-ocean ridge basalt signature comparable to oceanic *** paleomagnetism,we show that this fragment of oceanic crust was not part of the Izanagi Plate but was part of a plate(the‘Pontus’Plate)separated from the Izanagi Plate by a subduction *** on the minimum 40 Ma age of the oceanic crust and its geochemistry,we suggest that Mesozoic subduction below South China and borneo stopped when an oceanic plateau entered the trench,while the eastern plate margin with the Izanagi Plate remained *** show how our findings offer opportunities to restore plate configurations of the Panthalassa-Tethys junction region.

关键词： Proto-South China Sea Paleomagnetism Geochemistry borneo Paleo-Pacific Izanagi Plate

Characteristics of the Density and Magnetic Susceptibility of Rocks in Northern borneo and their Constraints on the Lithologic Identification of the Mesozoic Rocks in the Southern South China Sea

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 280-293页

作者： TANG Huafeng ZHAO Zhigang TIAN Zhiwen LU Baoliang TANG Wu HE Kailun ZHU Chenxi WANG Pujun Key Laboratory of Mineral Resources Evaluation of Northeast Asia Ministry of Natural ResourcesChangchun 130061China CNOOC Research Institute Co. Ltd.Beijing 100028China College of Earth Sciences Jilin UniversityChangchun 130061China College of Geological Engineering and Geomatics Chang'an UniversityXi'an 710054China

Based on the volume magnetic susceptibility and specific gravity measurements and mineral and lithologic identification results for 540 samples,the rock type,density,and magnetic susceptibility of rocks from northern borneo were analyzed,and the applicability of gravity and magnetic data to the lithologic identification of the Mesozoic strata in the southern South China Sea was assessed *** results show that there are 3 types and 25 subtypes of rocks in northern borneo,mainly intermediate-mafic igneous rocks and exogenous clastic sedimentary rocks,with small amounts of endogenous sedimentary rocks,felsic igneous rocks,and metamorphic *** rocks that are very strongly-strongly magnetic and have high-medium densities are mostly igneous rocks,tuffaceous sandstones,and their metamorphic *** rocks that are weakly magnetic-non-magnetic and have medium-very low densities are mostly conglomerates,sandstones,siltstones,mudstones,and *** rocks that are weakly magnetic-diamagnetic and have highmedium densities are mostly limestones and siliceous *** Cenozoic rocks are characterized by low densities and medium susceptibilities;the Mesozoic rocks are characterized by medium densities and medium-high susceptibilities;and the pre-Mesozoic rocks are characterized by high densities and low *** on these results and the distribution characteristics of the various rock types,it was found that the pre-Mesozoic rocks produce weak regional gravity anomalies;the Mesozoic sedimentary rocks produce negative regional gravity anomalies;whereas the Mesozoic igneous rocks produce positive regional gravity anomalies;and the Cenozoic igneous rocks produce positive regional gravity *** regional high magnetic anomalies in the southern part of the South China Sea originate from the Mesozoic mafic igneous rocks and their metamorphic equivalents;and the regional medium magnetic anomalies may be produced by the felsic igneous rocks and their

关键词： density magnetic susceptibility Mesozoic borneo South China Sea

Theloderma licin McLeod and Ahmad,2007 (Lissamphibia:Anura:Rhacophoridae),a New Frog Record for borneo

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Asian Herpetological Research 2013年第3期4卷 221-223页

作者： Indraneil DAS Jongkar GRINANG Yong Min PUI Institute of Biodiversity and Environmental Conservation Universiti Malaysia Sarawak

A new record of the rhacophorid frog, Theloderma licin is reported from Gunung Serambu, in the Bau region of western Sarawak, East Malaysia, which comprises the first published record of the species from the Sundaic island of borneo. The species was previously known from the Malay Peninsula （southern Peninsular Thailand and Peninsular Malaysia）. Species of Theloderma are widespread in mainland and insular Southeast Asia, their arboreal habits perhaps contributing to our perception of rarity.

关键词： Theloderma licin Lissamphibia Anura Rhacophoridae borneo new record

Gerarda prevostiana(Eydoux and Gervais,1837)(Squamata:Serpentes:Homalopsidae),a New Snake for borneo

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Asian Herpetological Research 2013年第1期4卷 76-78页

作者： Indraneil DAS Hans BREUER Samuel SHONLEBEN Institute of Biodiversity and Environmental Conservation Universiti Malaysia

A new record of the homalopsid snake, Gerarda prevostiana is presented from a mangrove-dominated patch in the vicinity of Kampung Bako, Sarawak, East Malaysia, and this comprises the first published record from the Sundaic Island of borneo. A possible second locality for the species is a ca. 6.68 km site to its northeast, Kampung Buntal, based on an unlocated museum specimen. The species is widespread in mainland Southeast Asia, with additional records to the west （the Indian Subcontinent） and east （the Philippines Archipelago）, but was previously unrecorded from the islands of the Sundas. The secretive habits of the species, including the occupancy of mud lobster （Thalassinia spp.） mounds in mostly inaccessible, swampy habitats may be a reason for its perceived rarity and few published records.

关键词： Gerarda prevostiana serpentes Squamata Homalopsidae borneo new record

A New Epi‑neoverrucosane‑type Diterpenoid from the Liverwort Pleurozia subinfata in borneo

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Natural Products and Bioprospecting 2020年第1期10卷 51-56页

作者： Takashi Kamada Mary Lyn Johanis Shean-Yeaw Ng Chin-Soon Phan Monica Suleiman Charles SVairappan Department of Materials and Life Science Faculty of Science and TechnologyShizuoka Institute of Science and Technology2200-2 ToyosawaFukuroiShizuoka 437-8555Japan Institute for Tropical Biology and Conservation Universiti Malaysia Sabah88400 Kota KinabaluSabahMalaysia

New bioactive 13-epi-neoverrucosane diterpenoid,5β-acetoxy-13-epi-neoverrucosanic acid(1)along with three known secondary metabolites,13-epi-neoverrucosan-5β-ol(2),chelodane(3)and(E)-β-farnesene(4)were isolated from the MeOH extract of east Malaysia’s liverwort Pleurozia *** chemical structure of new compound was elucidated by the analyses of its spectroscopic data(FTIR,NMR and HR-ESI-MS).These epi-neoverrucosane-type compounds seem to be notable chemosystematic markers for *** in *** 3 was widespread in marine sponges however this is the frst record for 3 to be found in *** metabolites were tested for their antifungal potentials against selected fungi from the marine *** 1 exhibited efective antifungal activity against Lagenidium thermophilum.

关键词： Epi-neoverrucosane Diterpenoid Pleurozia subinfata Liverwort borneo

Taxonomic Revision Of The Genus Drepanolejeunea in the borneo Island

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Taxonomic Revision Of The Genus Drepanolejeunea in the Borne...

作者： Ang Lee Ping 华东师范大学

学位级别：硕士

The genus Drepanolejeunea is the fourth largest genus in the family *** is widely distributed in the tropical *** tropical island borneo,which is the third largest island in the world,has previously reported a number of 24 Drepanolejeunea ***,the species mostly grows on the leaves,tree trunk and tree *** the rise of the genus in 1893,it has been challenging to study the species delimitation due to its smaller size and hydrophilic *** highly plastic species also led to the difficulty in identifying Drepanolejeunea *** there was a number of phylogenetic analyses conducted on the genus in the past,there are still many problems with the morphological characters that explain the monophyletic relationship of the certain species ***,the study aimed 1)to revise the morphological characters of Drepanolejunea species in the borneo island in relation to its phylogenetic analyses and 2)to establish a morphological framework for investigating species boundaries for Drepanolejeunea complexes and 3)to reveal species diversity and distribution in *** 500 specimens were collected from eight investigated locations on the borneo ***-morphological and phylogenetic methods were used in the *** study confirmed that ***,***,***,*** and *** are new to the ***,three species,namely ***,*** and *** remained *** brunnea,now named Mohamedia brunnea,has been excluded from the *** species,***,was mistakenly reported in previous ***,the caducity character used in delimiting *** from *** and *** was debated based on the physiological ***,more reliably stable characters to delimit aforementioned species were basal ocelli shape and size as well as underleaves middle *** obliqua an

关键词： Lejeuneaceae Drepanolejeunea morphological characters borneo Taxonomy

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马来西亚borneo制浆项目依旧毫无起色

造纸信息 2001年第1期 23-23页

作者：孙来鸿

新加坡的亚洲浆纸(APP)日前指出,自1998年来马来西亚的borneo制浆项目一直被无限期推迟,项目的启动问题依然未见起色.

关键词：马来西亚 borneo 制浆项目造纸厂投资计划