Tuyin tap bao cao Hoi nghj KHCN "30 nam Dau khi Viet Nam Cc hoi moi, thach thiic moi" 141 TlTonVG, MOI T R i r d N G THANH TAO T R A M TICH PALEOGEN THEM LUC DIA VIET NAM MOI LIEN QUAN CUA CHUNG TOI T[.]
Tuyin tap bao cao Hoi nghj KHCN "30 nam Dau Viet Nam: Cc hoi moi, thach thiic moi" 141 TlTonVG, M O I T R i r d N G THANH T A O T R A M TICH P A L E O G E N T H E M LUC DIA VIET NAM: MOI LIEN Q U A N CUA CHUNG TOI TIEM NANG D A U KHI Ly Truong Phuong Tong cdng ty Ddu Viet Nam Ly Thj Hue Cdng ty Dau tw vd Phdt triin Ddu TOM TAT Kit qud tim kiim, thdm dd vd khai thde ddu tgi cdc bi trdm tich thudc thim luc dia Viet Nam hon 20 ndm qua, ddc biet 10 ndm tr& lgi day cho thdy cdc trdm tich vim thd cd tudi Paleogen (ehu yiu la Eocen vd Oligocen) ddng vai trd quan trgng quyit dinh dim ndng ddu ciia cdc bi trdm tich De tam v&i vai trd la tdng da sinh ddu Ddc diim tren cimg rdt phd biin tgi mdt sd be trdm tich De tam thudc cdc nu&c Ddng Nam A nhu Inddnexia, Thdi Lan, noi cd tdng sinh ddu la tdng set thudc tu&ng dam hd Do vdy, viec nhdn biit cdc ddc diim trdm tich nhu thdnh phdn, mdu sdc, kieu phdn l&p, cdc ddc diim khodng vdt thgch hoc ciia hgt vun, V.V., ddng vai trd quan nhdm xdc dinh mdi trucmg thdnh tgo trdm tich, chii yiu lien quan t&i cdc mdi trw&ng dam hd, vimg vinh, cd tdm quan hdng ddu Gdn nhu theo quy lugt, & ddu tdn tgi tdng set thdnh tgo mdi tru&ng dam hd, cd chieu ddy l&n, phdn bd rdng, hien ndm & sdu thich hgp ( 10.000m) cd tiim ndng ddu thdp han, cdc phdt hiin se chu yeu Id v&i muc tap trung thdp, biphdn tdn Nhdng trinh bdy bdo cdo ndy se tap trung vdo ddc diem trdm tich cd tudi Paleogen (Oligocen vd ed hon) eua mdt sd bi trdm tich (noi cd nhiiu mdu loi, mdu miin kiwan da dugc md td, phdn tich), tim hiiu mdi quan he giu'a dac diem trdm tich, tu&ng dd lien quan t&i cdc dge trung cd dja hinh eua cdc bdn trung nhu th&i gian hinh thdnh bi, cd dia hinh cua bdn ddo Ddng Duong vd viing ke can lien quan t&i th&i ky thdnh tgo cdc trdm tich Paleogen quyet dinh su ed mat hodc khdng ciia set ddm hd Cudi ciing bdo cdo se tap trung xem xet mdi lien quan giua set dam hd Id tdng sinh ddu cd tudi Paleogen gdp phdn nhin nhdn tiim ndng ddu tgi mdt sd bi trdm tich Di tam thudc thim luc dia Viet Nam DAC DIEM T R A M TICH, T U O N G DA CAC THANH TAO PALEOGEN Be tram tich Song Hong Be tram tieh S6ng H6ng hien theo y kiln eiia cac nha dia chk, dia vat ly bao gIm ca phan dat lien (mien vong Ha Noi) va ph^n rong lan ngoai khoi Ban than ph4n ngoai khoi 142 Tuong, moi truong tao tram tich Paleogen thim luc dja Viet Nam: M6i lien quan ciia chiing dugc chia lam phan g6m phan trung tam va phia Nam ciia be Trong hai khu vyc ke tren, viing CO mat khoan tham Ion nhat la tai MVHN Tai day, giing khoan 104 (khoan tai Phil Cir) lan dau tien da gap cac tram tieh co tu6i Eocen (he thng Phii Tien) va Oligocen (he tang Dinh Cao) Cac tram tich Oligocen, Eocen deu la tram tich vyn th6 g6m chii yeu la set ket (argilit: 80%o) xen cat ket hat th6 toi va mgt vai lop cuoi ket Dac diem co ban la da CO mau tir xam sang, xam den toi nau, tim d6 Da eo cau tao dang kh6i, d6i h6n tap, co nhieu vet trugt lang bong, ong anh Cho toi he tang Phii Tien moi chi duge phat hien a gieng khoan 104 voi phan hat vyn eiia da eat la da khoang g6m vyn phun trao, da tram tich bi bien vi, da bien chat (eat ket, bgt ket, quaczit) Dac diem hat vun ciia da thuong sac canh tai ban tron canh, chgn lge kem, the hien da dugc tao m6i truong co nang lugng cao gan ngu6n cung cap vat lieu dac tnmg cho cac tram tieh lot day O ngoai khoi, tai khoan 107T-PA-1X (do C6ng ty Total khoan) da gap tram tich tu6i Eocen g6m cuoi ket, san ket, cat ket xen ke xen set bgt ket mau xam toi nau sau 3050 - 3535m [1 ] Tai MVHN, ngoai khoan 104,cae tram tich Oligocen (He tang Dinh Cao) dugc phat hien tai D6ng*Quan, Thai Thuy (Phan Huy Quynh, D6 Bat, 2003) Tai day da phat hien dugc hoa thach dgng vat than mem Viviparus Tai khoan 104 cac tram tich tuoi Eocen, Oligocen dugc tao m6i truong lyc dia voi cac tuong dac trung: suon tich, lii tich, boi tich, tap set mau nau co the lien quan toi tuong dam ho (phan dat lien) Trong vai nam tro lai day (1994 - 2005) co nhilu sy thay dii vl phan chia dia tdng (C6ng ty Anzoi, D6 Bat va n.n.k., PIDC) ve su co mat ciia cae tr^m tich Oligocen Cu thi tai phan Ion gieng khoan sau, truoc la phan duoi ciia he tang Phong Chau (Miocen som) dugc xep vao Oligocen Theo phan chia nay, cac tram tich Oligocen tai cac khu vyc D6ng Quan, Tien Hai, Kien Xuong, Tien Hung la cae tao vyn th6 cat kit rSn chSc, chat xit, chii yeu la hat xen ke cae tang bgt ket, set ket mau xam, xam den toi xam xanh, chu ylu CO cau tao phan lop m6ng, xien cheo Nhu vay, ve mat thach dia t4ng he thng Dinh Cao vl CO ban da khae xa so voi cac dac diem cua da tram tich vin co ban d^u tai khoan 104 (Phu Cir) Can luu y rang viec xac lap tu6i thuge ITnh vyc sinh dia t§ng, nhung vl thach dia tang c6 le can co them cac nghien cim xac dang hon niia Ben canh d6 cac hoa da bao tir ph4n hoa kh6ng thuge loai "in situ", tire kh6ng phai la cac chi tieu "tai cho" Thyc tl, dii voi cac trhm tich Oligocen thuoc cac be trhm tich De tam Ion Viet Nam nhu S6ng H6ng, Nam C6n Son kh6ng phat hien duge cac chi tieu khae nhu vSng mat triing 16, v.v thi su co mat cua bao tir phan hoa truoc het la chi tieu quan trgng xac lap tuong luc dia ciia cac trhm tich Kit qua nghien cim hon 40 nam qua vl MVHN (tinh tir nam 1960 toi nay) diu khSng dinh MVHN la doi khau co hanh tinh va hit sire phire tap Sy hinh MVHN Iu6n gan lien voi qua trinh tach gian, sut liin lien tuc boat dgng va tai boat dgng cua he thing cac dirt gay S6ng L6, S6ng Chay, S6ng Hing Theo tuyin ngang (D6ng BSe - Tay Nam), MVHN co dac trung nhu mgt nem Ion voi cac don nghieng hai ria (don nghieng Thai Binh tai ria Tay va nghieng thoai a ria D6ng Bic), cac dai nang Tien Hung - Kiln Xuong - Tien Hai dugc phan cat boi cac triing Phugng Ngai va triing D6ng Quan Tai trung sau lop phu tram tich De tam co thi dat tai - 7km Dac dilm kh6ng nhan thay a ngoai them lyc dia (ngoai khoi vinh BSc bg) Voi dia hinh nhu tren kh6ng loai trir sy CO mat ciia set dam h6 tai triing Phugng Ngai co the ca trting D6ng Quan, nhung nhm a chieu sau Ion (triing Phugng Ngai) Tuyin tap bao cao HQi nghj KHCN "30 nam Dau Viet Nam: Co hoi moi, thach thiic moi" 143^ Ngoai khoi vinh B4C bg: Hien chi phat hien dugc cac tram tieh tuoi Oligocen tai mgt so giing khoan cac 16 102, 103, 107, 112, 118, 119 la cac trhm tich vyn th6 cat kit, bgt kit, set kit xen ke Da chu yeu co mau xam sang, xam xanh toi xam den hau nhu kh6ng CO mau nau dieu khae biet voi MVHN Theo phan loai ciia Folk (1974) eat ket thuoc loai litharenit va felpat litharenit Hat vun thuong sac canh toi ban tron canh, chgn Igc bao tron t6t toi trung binh Da set co phan chu yeu la kaolinit, sau day la ilit va clorit Cac khoan ngoai vinh Bae bg chii yeu chi co mau mim khoan rat it mau loi (trir 16 103, 112) Mac dii khoan cac doi nang hoae moi chi gap phan tren cac tr^m tich Oligocen nhung qua dac diem mau sac, sy co mat cua trimg 16, glauconit co the cho rSng ngoai khoi cac tram tich Oligocen duge tao chu yeu m6i truong biin ven bo, cae tram tich dam h6 co the la tram tich Paleogen va Eocen hien nhm rk sau (tai cac trting sau >10km, Hinh 1) M6i truong dam h6 chi xay tai thai ky d^u, vao Oligocen m6i truang bien ven bo, tham chi bien n6ng da duge xac lap Nhu vay, d6i voi ngoai khoi vinh Bae bg, cac tram tich dugc xem la co tu6i Oligocen kh6ng thuoc tuong dAm hi Hinh 1: Ban dang day tram tich de tam - b^ tram tich song Hong 144 Tu'OTig, moi tru'ong tao tram tich Paleogen thim luc dja Viet Nam: lVl6i lien quan ciia chiing Be tram tich Ciru Long Tai be Cim Long da phat hien dugc cac tram tich co tu6i Eocen (he t ^ g Ca C6i) va tram tich tu6i Oligocen (he tang Tra Cu, he tang Tra Tan) Trong he t^.g Ca Cli mod chi dugc phat hien tren dit lien (khoan CL-IX) tram tich co tu6i Oligocen dugc phat hien ca a CL-IX va ngoai khoi, day dac biet ph6 bien la da tram tich tuoi Oligocen tren (he ting Tra Tan) Da tram tich tuoi Eocen (he tang Ca C6i) g6m cuoi, san ket, cat kit da khoang xen cac lop set, bgt ket Dac tnmg co ban cho tuong lyc dia la da set eo mau nau do, tim d6, tim sac so Hat vun ciia da cat co chgn Igc, bao tron kem Cac dac trung phan ve hat, xi mang, mau sac phan anh da dugc tao dieu kien luc dia nang lugng moi truong tram tich cao Nhieu nha dia chat cho rang, vao trung tam be Cim Long (sau 7km) t6n tai cac tram tich Eocen Da tram tich tu6i Oligocen som (he tang Tra Cu) dugc mo ta tai gieng khoan CL-IX g6m chii yeu la set, bgt ket, xen cac tap cat ket va cac via than mong Da set thuong co mau den toi nau, cau tao kh6i d6i gap cac via phun trao, diabaz, basalt Ngay tai cac kh6i nang trung tam nhu Bach H6, R6ng, chieu day he tang Tra Cu c6 thi dat toi 500m [2] Da tram tich Oligocen mugn (he tang Tra Tan): Pho biin tai bl Cim Long, gIm set ket mau nau, nau dam, nau den (tap D) voi ty le set thay dii 60 - 70%) xen cat kit, bgt kit o phan tren Phan duoi g6m chii yeu hat tai th6, d6i la san, cuoi, set chiim ty le tir 20 - 50%) Da CO cau tao kh6i, phan lop day Hat vyn da cat thuong sSc canh, chgn Igc, bao tron t6i, dac trung cho m6i truang tram tich lot day a thai ky diu, sau chuyin sang cbl nang lugng thap (dam h6) voi viec hinh ting set mau nau rit day, rit giau VCHC Be tram tich Nam Con Son Ph6 bien cac 16 la da tram tich tu6i Oligocen thuge he ting Cau g6m phin duoi ciing la cat ket hat toi rat th6 xen san kit, cuoi kit Da co mau xam, xam sang, doi CO cac lop phun trao mong Phan giua gIm hat set kit, bgt kit chiim uu thi Da set va bgt ket c6 mau xam den, xam sim toi phot nau (16 05-1, 21), c6 ciu tao khii, phan lop day Phan tren chu ylu la cat kit hat xen set, bgt kit c6 mau xam den, toi xam xanh Tai phin tren da gap triing lo, ngoai co dang phan lop mong, ggn song (16 12) thi hien vao cu6i Oligocen da c6 mat tuong biin ven bo [4] B I Nam C6n Son la bl rong lan, CO dia hinh mong truoc Kainozoi hien nim chilu sau rit khae nhau, vay sy thay dii cac tap tren a timg 16 la khae [1] Da set kit va bgt ket tu6i Oligocen da phin co ciu tao phan lop day hoae dang khii, rin chic, set bi biin d6i kha manh (nen ep va tai kit tinh) din tro argilit, phin set chu yeu la hydromica va kaolinit, cac tap set giau VCHC hien tai dugc danh gia la ting sinh dau ehinh ciia bl Nam C6n Son Tuy nhien, tai trung sau thuge bl Nam C6n Son (trung Bae - 16 04 cu va trung Nam - 16 05 cu) noi ehilu day lap phu De tam >10km CO kha nang co mat cac tram tich Eocen voi cac tuong dim hi Be Malay - Th6 Chu Tram tich tu6i Oligocen (he tang Kim Long) g6m ehii yeu la set ket, cac lap mong bgt ket, cat ket va cac lop than m6ng Set ket co mau xam, xam den toi xam nau Tuyin tap bao c^o Hoi nghj KHCN "30 nam DSu Viet Nam: Co hoi moi, thach thiic moi" 145^ phin da set chu ylu la hydromica va caolinit Cac tap set than giau VCHC duge xem la cac tang sinh dau ciia khu vyc Trim tich vyn cat kit chii yeu hat nho toi trung binh, d6i co hat th6 nhu san ket, da co mau xam nhat toi xam nau Hat vyn thuong goc canh toi tron canh, chgn lge tir trung binh toi tit Cac trim tich hat th6 la cac tao lot day, dugc xen ke voi tram tich set, bgt Ngu6n cung cip la nhiing kh6i nh6 mong, nhung voi phan hat chiem chii yeu toan bg lat cit phan anh dia hinh nghieng tuong d6i bang phang ciia mong co va vat lieu tram tich dugc tao m6i truang nang lugng thap, co the la dieu kien bien ven bo da dugc xac lap tir cu6i Oligocen Da bien d6i tir Katagenes som toi Katagenes mugn.Cac ket qua nghien cim tai them lyc dia Tay Nam Viet Nam (Malay - Th6 Chu) cho thay tram tich dam h6 co mat tai 16 46, A, B, 51 [2] Con lai la thuge cac tuang dam lay ven bien va cat, set chau th6 MOI QUAN HE GILTA SET DAM HO VA KHA NANG SINH DAU, KHI Mien vong Ha Noi Nhu m6 ta a tren, set mau nau, tim gan ga voi sy co mat cua bao tir phan hoa dugc phat hien tai gieng khoan 104 Phu Cir co the la set dam h6 Ngoai ra, tai triing sau la triing Phugng Ngai va it kha nang hon la triing D6ng Quan co the co mat cac tuong dam h6 a Phdn trung tdm Voi cac mau m6 ta cac dac trung tram tich, dia hoa d6i voi cac mau da phan tich chua that sy khang dinh m6i truang dam h6 Kha nang m6i truang dam h6 t6n tai vao dau Eocen, tham chi vao dau Paleogen nam tai triing trung tam rong Ian a chieu sau tir - 10km Vao Oligocen, ve co ban da ket thiic che dam h6 va thay vao la m6i truong bien n6ng rong khap Nhu vay, tai be S6ng H6ng c6 mat set dam h6 la cac tang sinh t6t, tu6i chii yeu co le la Eocen (?), hien nam chieu sau Ion da qua tat ca cac pha tao san pham [2, 3, 6] Vat lieu da g6c da dang nhung chii yeu la cac kh6i bien chat (g6m ca tram tich, maema, va da v6i bien vi), ngheo nan ve VCHC, kerogen chii yeu la loai III, II Be Ciru Long Set dam h6 co tuoi chii yeu la Oligocen, co quy m6 phat trien rong lan M6i trudng dam h6 t6n tai lau dai, toi cu6i Miocen som be tram tich mai th6ng voi bien Vat lieu da g6c chu yeu la da maema (granit) phong hoa da tao nen Iugng set phong phu tich tu m6i truong dam h6 Cac tang set dam h6 giau VCHC nam chieu sau rat thuan lgi qua trinh sinh dau, khi, co gradient nhiet cao Cac chi so dia hoa khang dinh su co mat ciia rong tao nuoc nggt [6] Kerogen chii yeu loai II, I valll Ngoai ra, he th6ng song MeC6ng co co kha nang la ngu6n cung cap phii sa rat giau vat chat htin co d6 vao h i c6 Cim Long, tao cho cac ting set rit giau VCHC (Bang 1) Dae diem ton tai toi vai nhtrng dim liy, bai su vet rong Ion ciia d6ng bang s6ng Cim Long '^ CNl cn Malay - Tho Chu Oligocen va c6 hon (?) C Nam Con Son ca Oligocen va CO hon (?) ' Logi kerogen Pr/Ph Mdi tru&ng phdn huy VCHC Xam den toi phot nau Tap trung chu yeu tai trung tam Cau tao kli6i Moi truong dam ho chii yeu o trung tam bon triing Xuat hien Hiu hit > til' Eocen, vao cuoi Oligocen 0,5% chiu anh huong ciia bien ven, bien nong Chii yeu loai III, it loai II 4,5-7,0 khir, khir yeu Mau xam den toi nau, tim Moi tru'ong dam ho vao Chii yeu Ngoai khoi VBB: xam Paleogen, Eocen Vao 3,87-8,46 khir, khir yeu 0,64-3,64% loai III den, xam xanh (Oligocen) Oligocen xuat hien dieu kien bien ven bo Moi truong dam ho la chii yeu 0,9-6,1% Chu yeu Mau nau, chieu day Ion, 1,73-2,3 khir, khir yeu doi noi ciu tao khoi, phan lop day xay vao Oligocen, ton tai loai II, I 11-12% lau dai toi Miocen som Moi truong dam ho ton tai Xam den toi phoi nau 0,42%-8,l% Chii yeu trung sau Co mat tir Eocen, Tap trung chii yeu tai (set than) loai III, it 4,0-11,0 khir, oxy hoa cuoi Oligocen anh huong bien triing thay doi loai II ven bo theo 16 Mdi tru&ng thdnh tgo B Ddc diem trdm tich set to Tudi Be trdm tich o TOC (% wt) 146 Tuong, moi tru'ong tao tram tich Paleogen thim luc dja Viet Nam: Mdi lien quan ciia chiing -s: "T E5 -s: s: t -s: s: :§ 'lis -s: s ^ Tuyen tap bao cao Hoi nghj KHCN "30 nam DSu Viet Nam: Co' hoi moi, thach thiic moi" 147 Be Nam Con Son M6i truong dim h6 tap trung chii yeu a trGng phia BSc doi nang Mang Ciu, gIm cac 16 04-2, 04-1, triing phia Nam 16 05-2, 05-3, mgt phin 16 11-2 Trung phia Nam co dien phan bo rong Ion hon phia Bic Day la triing quan trgng nhit voi vai tro tin tai ting sinh diu chii ylu ciia be Nam C6n Son (Hinh 3) Tuong dim h6 dugc xac lap ti> Eocen hoae c6 hon, vao cu6i Oligocen da co mat tram tich biin »» iif r»M< Mint, ins Hinh 2: Mat cat dia chat ngang be tram tich Nam Con So'n Khdng thuan lgi: Tram tieh dam h6 co dien phan b6 kh6ng Ion, kh6ng tap trung, nim chieu sau Ion (7 - 10km) Dau va dugc sinh ra, sau diy chiu qua trinh biin dii nhiet va qua trinh tai phan b6, da trai qua tat ca cac pha tao san pham Khae voi bl Cun Long, bl Nam C6n Son c6 nam rat xa he th6ng s6ng c6 thuoc chau thi MeC6ng vay it thuan lgi hon ve ngu6n cung cap vat lieu hiru ca VCHC thuge loai ngheo toi trung binh, tin tai mgt s6 via than, set than co VCHC cao ban Kerogen chu ylu thuge loai III va mgt it loai II IO7W l(fZV lOTjO' IS::-! TiMog CII < & > % ) ilflO^ Raahgldiii/djig Hi/diig ddag cbajr co Hvdag ciijig cap v l i li^ u Gieog IcdoiQ lOfOO' 9" ' - / » • »"»• Vic U?» Hinh 3: Sff dl tirffng da tap D \a^vr 148 Tu'ong, moi tru'ong tao tram tich Paleogen them luc dja Viet Nam: lVl6i lien quan ciia chiing B I Malay - Th6 Chu Tram tich thuoc tuong dam h6 da phat trien rong rai, tai trung tam ciia b6n trting, noi chieu day lop phii De tam day toi >11km (Petronas, 1999) Tai cac 16 thuoc them lyc dia Viet Nam ciing c6 mat tang set dam h6 nhumg voi quy m6 nho, chu yeu nam a cac dia hao Dieu kien dam h6 duge xac lap rat som, co le tir Eocen (vimg trung tam) t6n tai Oligocen som, vao cu6i Oligocen da xuat hien tuong bien ven ba, tuong ty nhu be Nam C6n Son va bl S6ng H6ng Vl chi sl Pristan/Phytan cho thay phan Ion cac tang sinh thuge tuong s6ng - chau th6, chi CO mgt s6 it thuge tuong dam h6 NguIn vat lieu eho da trim tich chu ylu la tir da biin chat, VCHC tir trung binh toi t6t, chu yeu thuge loai III, II Ting sinh da trai qua tat ca cac pha tao san pham, ket qua tham tai be Malay - Th6 Chu cho thiy chii yeu da phat hien cac mo Tir Chinh - Vung May, Trucmg Sa Da CO khoan tham (PV-94-2X, cac khoan tai bai co rong) Da phat hien cac tram tich tu6i Eocen, Oligocen, la cac tram tich vun cat ket, bgt ket, set ket nam xen ke KET LUAN Tir cac ket qua trinh bay tren, co the rut cac nhan xet sau: • Ket qua khoan tham tai cho thay: Ci tat ca cac be tram tich deu t6n tai cac bay dau Bang chung la da phat hien cac mo dau, cac be Song H6ng, Cim Long, Nam C6n Son, Ma Lai - Th6 Chu Do vay, viec phat hien mo dau, tai cac be chii yeu tang sinh quyet dinh, dau, khu vuc nao co tang set dam h6 thi kha nang phat hien mo dau, cao • Cac tang set thuoc tuong dam h6 quyet dinh cac chi tieu dia hoa t6t: giau VCHC, kerogen loai II, I la chu yeu Set dam h6 be Cim Long la tang sinh dau t6t nhit da dugc phat hien • Set dam h6 la tang sinh t6t nhat hien kh6ng nam sau qua - 7km, dilu kien co lien quan tai gradient nhiet do, quyet dinh cac nguong truong ciia VCHC • Be tram tich khep kin, kh6ng lien thong voi biin thoi ky dai Sy co mat cua tuong dam h6 la co dia hinh cua mong truac De tam quylt dinh TAI LIEU THAM KHAO D6 Bat va n.n.k., 2001 Bdo cdo dinh danh liin kit dia tdng trdm tich Di tam, thim luc dia Viet Nam Ha Noi Nguyin Hiep va n.n.k., 2005 Dia chdt vd tdi nguyin ddu Viet Nam Ha Noi (chua xudt bdn) Nguyen Bich Ha, 2003 Nghien ciru da me bi trdm tich Sdng Hdng Ha Noi Tuyen tap bao c^o HQi nghj KHCN "30 nSm Dau Viet Nam: Co' hoi moi, thach thiic moi" 149 Ly Truong Phuong, 1997 Dd trdm tich Paleogen bi Nam Cdn Son: Mdi liin quan cua chung t&i tiim ndng ddu Tap chi Dau So Ly Truong Phuong, 1996 Tu&ng, mdi trucmg thdnh tgo vd tiim ndng ddu dd trdm tich tudi Oligocen hi Ciru Long Tap chi Dau khi, S6 Hoang Dinh Tien, Nguyen Thuy Quynh, 2003 Ddc diim dia hda cua cdc trdm tich them luc dia Viet Nam Tap chi Dau khi, S6 7 Nguyen Nhu Trung, Nguyen Thi Thu Huong, 2003 Cdu true vd Trdi ddt khu vue Biin Ddng theo sd lieu di thuong luc ve tinh vd dia chdn sdu Tuyen tap bao cao Hgi nghi Khoa hgc - C6ng nghe ''Viin Ddu khi: 25 ndm xdy dimg vd tru&ng thdnh"", NXB Khoa hgc va Ky thuat, Ha Noi, tr 336 - 356 ... tru''ong tao tram tich Paleogen thim luc dja Viet Nam: Mdi lien quan ciia chiing -s: "T E5 -s: s: t -s: s: :§ ''lis -s: s ^ Tuyen tap bao cao Hoi nghj KHCN "30 nam DSu Viet Nam: Co'' hoi moi, thach...142 Tuong, moi truong tao tram tich Paleogen thim luc dja Viet Nam: M6i lien quan ciia chiing dugc chia lam phan g6m phan trung tam va phia Nam ciia be Trong hai khu vyc ke tren, viing... tap bao c^o HQi nghj KHCN "30 nSm Dau Viet Nam: Co'' hoi moi, thach thiic moi" 149 Ly Truong Phuong, 1997 Dd trdm tich Paleogen bi Nam Cdn Son: Mdi liin quan cua chung t&i tiim ndng ddu Tap chi