PHAN VIEN AI PHONGdcbaZYXWVUTSRQ HAl OIJONG HOC TAl UTSRQPONMLKJIHGFEDCBA : '" •••• _ A NHA XUAT BAN KHO A HO C VA KY THU~T PHAN V I~ N TAl HAl DUONG HOC TAl TAp N G H IE N CAC CUU PHONG vA NGUYEN M O l (fR V O N G (T U Y E N HAl B IE N CONG T R IN H 1991 - 1993) T A p dcbaZYXWVUTSRQPONMLKJIHGFEDCBA II N H A X U A T B ,(N K H O A HA xor HOC 1994 vA K Y T H U ~ T M1)C L1)CdcbaZYXWVUTSRQPONMLKJIHGFEDCBA T n g l wi g i6 th ie u UTSRQPONMLKJIHGFEDCBA M ot sO n M n xe t ve to n g h o a t d o B e ta tro n g m o i tn ro n g vu n g ca n g H a l P h o n g Thi V ii '- { { e n , L U ll Van S O 'b Q ve S I! b ie n d (> n g m (> t & y e ll t6 th U y h o a v u n g c u a s o n g vcn b i~ n I h ii P h o n g Luu V a n D ie u , D o n g lu c b O i tl,! -.xo i & 0 va sir th a y d o i h ln h d a n g d a o sa n h T ru o n g LKJIHGFED Dtsu Pluun Van Luong Sa 13 T r a n D Ir e 1 ( 1 h K e t q u a kh a o sa t b u o c d a u n u r i c n g u m d a o sa n h o T ru o n g Sa 19 Trttn K e t q u a tfn h soog va ap h ,I'Ca n h h u o n g d e n cM n co n g trln h d e n b i~ n d a o D a T fly (T ru o n g -' V a l n e t ve d ja m a o d i 0 ch a u th o s o n g H o n g D lr c Pham Sa) h i¢ n d a i, 30 V a n flu y B in h 3H 'r a n D in lz L d n , N g lly e n D a c tn m g h ln h th a i b o i tu & vu n g C&3 ~ a h a t tra m 26 T h a n h T lI/IY D in h I3 le n d (\n g d a t b O l ve n b i~ n v u n g c u a s6 n g T M I Thann tich cu a ca c th ~ ca t ve n b i~ n va m o i q u a n M Or Enec vo t S I! xo i & va so n g B a ch D h n g 43 T r fin D in h Lan A P d u n g q u i to c B ru u n d ~ tin h ro a n d u ' b a o xo t & ca c o o i b ie n vcn 0 H a i P h o n g kh i co S I! d a n g ~~~~ ~ Tritn D ir e 'h ( I1 1tJ in h N guyen D ,r e V iin H u y , Cu, Tritn D in h Lon I l I Io a t d o n g d L h g a y h it$ n d < :tiv u n g H ili P h o n g - Q u a n g Y e n 54 N guyen e lm , T r iin V II'C S I ! p h a t trie n d U '(rn g X l' & kh u V I ! C H a i P h o n g - O u a n g Y e n tro n g H o lo xe n Dtnb H o e Thank v e l n n k N guyen q u a n g h le n cu u ca c h ¢ d e ca t c O ' 61 Dtnl: K h a o sa t d ja h ln h b fil trlcu V a n H llY , T r fin D li'c J h ( ln h p h l,!~ vu n u tra n g th U y sa n N guyen D ~ c d IB m tra m T fn h v~ l n a n g Iro n s tra m tfch h Ie n ~ i D ,I'C ,1 ' v a n n k kh u vu e ve n b i~ n 1 H a i - M U I D O c (H a i P h o n g ) 76 ' N guyen Q lI( IJ g T u d n Ph T h ( lJ 1 1T II/iy ro a n d o n g b o l tich d O C 0 C a t H a l d o so n g ve n b ie n ta o th a n h , D a n h g U \ tl'ln g h o o p tlcm X I (U n n a n g tt,r-n h lC n d o l vo t p h a t tricn d u ljch h ltln q u a n d a o C e lt B il tn« fJ ,I'C T h ( ll1 ll tJ o Q lla n g T h ln h N g /ly J n N g /ly e n 160 Or 71 N guyen 15 Kboang na« tlch va ca u tru e b c 'il trie u ve n h ie n H a i P h o n g - O u a n g Y e n XCI cn« //'0 , V a n t) o n g , fJ /n h V a n H u y , ·' Tai nguyen va moi truirng bien, T(ip 1/ - zyxwvutsrqponm 1994 lkjihgfedcb HO~T DONG DUT GAY HI~N D~I VUNG HAl PHONG - QUANG yl!N Nguyen YXWVUTSRQPONMLKJIHGFEDCBA C d n , Nguyen D i n l i Hoe (Dq,i H9C T6ng h o p HlL N(Ji); Tran o a « Thq,nh, Nguyen Duc CIt, Nguyen Hilu ca Nguyen Chu HtJi (PM n uien Hdi duang h9C H d i Phbng) I D~T VAN Dk Cac dut gay truct Mng theo phuong (Strike - slip Faults) la hlnh thai kien true pha huy phd bi~n va d~c trung cho dai mang tai dai b¢ phan bien vi n¢i mango Do su thay d6i trang thai cua trucng ung Built khu vVc, cac d~c trung co thuc cling nhu hlnh thai nhisu Ihn lich sit dia cMt khu vue Cac dut gay truot bang theo phuong (DGTBTP) khong bao gio phat tri€n ma luon luon di kern cac t6 phan tach dan, xiet ap, dich truot chiau vai dut gay chlnh) thuong ph at tri€n d9C Cac: dai nang tr~i (push-ups) don d¢c (cung chiau va ngucc va cac bon tram tich C1,lC b¢ theo cac doi DGTBTP o vung Hai Phong - Quang Yen, hoat dong DGTBTP hien dai bi€u hien kha da dang va g6p phan hlnh nhieu cau true dia chat, gay tac dong' Ion d6i vci hlnh thai duong bo cling nhu dieu kien dia chat dia phuong Bon tram tich D~ tu Hai Phong va lien quan chat che vci no la vung cira song hlnh pheu (estuary) Bach Dang co quan M true tiep ve mat nguon gec voi hoat d(>ng cua cac M DGTBTP II NkN DJA CHAT Cac da gan ket truce Do la cac tram D~ tu It? ch u yeu tlch luc nguyen cacbonat (j ph an dong hac cua vung nghien nguon gec bien co tudi khac cuu (h.L) tit Silua d~n Triat, cac tram tlch a luc dia chua'than Triat thuong, cac tram tlch luc dia mau tu6i Jura; rieng tram tlch Neogen (Mio-Plioxen) nguon g6c he-dam chi ph an b6 han cM' bon trung Hoanh B~ Tai go nang Do Son - Kien An, cac tram tlch vun luc nguysn va cacbonat co tuoi khoang Silua-Cacbon 1(>rai rac tren dong bang duoi dang cac kh6i nui thap khong lien tuc M6ng truce D~ tu iJ vung cua song Bach Dang chlm sau den 60 m [9], CJ phia tay nam song V an Uc den 140m (Theo bao cao thong tin cua Doan dia chat Ha Noi, 6-1993), Vung cira song Bach Dang hien dang tiep tuc bi sut chlm, M lach trieu day d~c lien tuc bi dao sau va me rong, bai trisu bi lay hoa, cac doi cat chan bi xdi 10 manh liet [4,9) III H O ~T t>Q N G DUT G A Y H I£N DM vU N G H A l P H O N G - Q U A N G Y £N Hoat d(>ng dut gay hien dal vung nghien cuu noi rieng va phia Bac Dong Duong noi chung, la san ph am cua pha bien dong pha huy bat dau tir cu6i Plioxen va keo dai cho den hien [1, 3, 6, 7, 8, 9, 10, 11) Nghien cuu chi tiet bieu hien cua 54 pha hoat d9ng dut gay d vung Hai Phong - Quang Yen co the thay nhirng yeu to d~c trung nhu sau : H4$ dill gay tr1.1 Hoat dt)ng dut gay hien dai iJ phan ttiy nam dut gay Nui Deo Do San Phan dien tlch phia tay nam dut gay Nui Deo - D b Son thuoc vung nghisn ciiu duoc d~c trung bang cac dut gay truot phai t~p trung chu yeu (j vung Dong Trieu - Kinh Man (h.1) Trong vung Hai Phong - Kien An - Do Son - Thuy Anh, chu yeu ph at trien cac dut gay truot trai ( S i n i s t r a l ) theo phuong DB - TN Cac dut gay truct phai phuong TB - DN d vung thti nhat da duoc Nguyen Trong Yam [11, 12] ghi nhan, cung nhu nhieu cong trlnh nghien cuu khac da neu kha 1'6 [2,3,5], nhung cac dut gay truot trai cJ vung thtr hai It duoc noi toi Nhung dut gay nay, mot mat duoc ghi nhan , chac chan tai cac doi pha huy da g6c d nui Xuan S ', t ~ ' I I" _ _ '