Mt s dc trng moi trng trm tich t

Nguyin Bich Dy, Nguyin Van T~o, Trinh Thi Thanh Ha, VU Van Ha, 393 Nguyin Trong Tin, Le Buc Luong.. Dia 431 tfrng tram tich D~ Tir them luc dia Viet Nam tiSp c~ tir dia tfrng phan t~p..

VI~N BAN LAM KHOA HQC vA CONG NGH~ VIeT NAM

VIEN DIACHAT•• vA DIAVAT•• LV BIEN

VIETNAM ACADEMY OF SCIENCE AND TECHNOLOGY

INSTITUTE OF MARINE GEOLOGY AND GEOPHYSICS

•

HA NQI - ~ LONG, 10-12/10/2013

PROCEEDINGS THE SECOND NATIONAL SCIENTIFIC CONFERENCE ON MARINE GEOLOGY

HANOI-HA LONG, 10-12 OCTOBER, 2013

29 Nguyin Tiin Hai, Nguyin Quang Tinh Tai bien thien nhien va nguy co t6n 364 thuong cac bai vung tri~u ado; yen bien tinh Thira Thien - HuS

30 Vu Hai Bang, Nguyin Ba Thuy, Nguyin Xuan Hi~n Nghien ciru anh huang 374 cua ke song toi suy giam s6ng tau

31 Le Xuan Thuyen, Trin Triit Lun thirc su la mot tac nhan nguy hiem gay 383 chim ngap d6ng bang Song Ciru Long

32 Nguyin Bich Dy, Nguyin Van T~o, Trinh Thi Thanh Ha, VU Van Ha, 393 Nguyin Trong Tin, Le Buc Luong Lai ban v~ thang dia tfrng ky D~ Tir

33 Nguyin NgQc Khai quat v~ sinh dia tfuIg Kainozoi Bi€n Dong Viet Nam theo 398 tai lieu chuang trinh khoan dai dirong (ODP) va mQt s6 v§n d~ lien quan

34 Trin Nghi, Nguyin Djch Dy, Ngo Quang Toan Dia tfrng trfun tich D~ Tir 412 cac d6ng bang yen biSn Viet Nam tiSp c~ tir dia tfrng phan t~p

35 Trin Nghi, Nguyin Bich Dy, Binh Xuan Thanh, Ngo Quang Toan Dia 431 tfrng tram tich D~ Tir them luc dia Viet Nam tiSp c~ tir dia tfrng phan t~p

36 Nguyin Th] NgQc Lan, Dinh Quac Tuin Moi tnrong tram tich cua loat da 444 manh V\IDh~ tfuIg Chau Thai, vung L9c Thanh, huyen LQc Ninh, tinh Binh Pluroc

37 Nguyin Hiru Hung, Trin Minh Khang Trinh tv dia tfrng cac thanh tao da 455 tram tich va da phun trao tnroc D~ Tir acac dao tren vinh Thai Lan va vung bo

bien Ha Tien, tinh Kien Giang

38 B,ng Hoai Nhon, Trin Buc Th~nh, Nguyin Thi Kim Anh, Nguyin Dlnh 475 Khang, Nguyin Mai L1}1l,Nguyin Ngoc Anh MQt s6 d~c trung moi tnrong

trfun tich tai 716khoan bai trieu mi~n B~c Viet Nam

39 Pham Van Thanh, Nguyin Thi TUOng, Nguyin Th] Hai Yin, Luong Th] 489 Kim Dung, B,ng Th] Huong D~c diSm dia chat moi tnrong vung yen bien va

bien mi~n Trung toi dQ sau 200 m mroc

40 Vu Truong Son, Trinh Nguyen Tinh, Pham Th] Nga, Le Van Buc, Nguyin 502 Duy Duyen D~c diSm dia h6a moi tnrong mroc vung bien Cu Lao Cham

41 Le Thi Vinh Ch~t luong moi tnrong tram tich dfun D~ Gi, tinh Binh Dinh 511

42 Pham Huu Tam Di~n bien ch~t hrong moi tnrong tram tich day tai dfun Nha 520 Phu - Vinh Binh Cang, tinh Khanh Hoa

43 va Truong Son, Van Trong B{), Le Van HQc, Nguyin Buc Th~ng Ti~m 529 nang khoang san r~ day biSn yen bo vung Di~n Huang - Cira Tir Hien va dinh

huang cong tac tiSp theo

44 Nguyin Van Quy, Bao M~nh Tiin, Nguyin Thi Nguy~t, Trin Thi ve, D~c 540 diem phan b6 va du bao khoang san r~n, v~t lieu xay dung vung yen biSn va

bien mien Trung dSn dQ sau 200 m mroc

45 Pham Th] Nga, Le Van Due, Nguyin Duy Duyin, Le Van HQc D~c diem 554 dia h6a nguyen t6 Ti trong cac tnrong tram tich bien yen bo Di~n Huang- Tu

Hien (Thira Thien - HuS)

46 Shakirov Renat, Nguyen Nhu Trung, Phung Van Phach, Obzhirov Anatoly, 560

Le Due Anh, Mal'tseva Elena, lugai losif, Telegin lurii, Syrbu Nadezhda,

Stukan Kristina Gasgeochemical featrures of Bac Bo gulf (Gulf of

Tonkin)-New results of joint Vietnam-Russia Lab for marine geosciences and technolog

7

-TI T KHOA: Bilitrieu, tr&mtich, pH, Eh, dinh duong

H inghi Khoa h9C Dia c h dt bidn toan quoc l dn t M II

BAI TRIEU MIEN BAc VI~T NAM

D~n Hoai Nhon, T r § n Duc Thanh, Nguy~n Th] Kim Anh, Nguy~n Dinh Khang ,

Nguy~n Ma i Luu, Nguy~n Ngoc Anh

ne« Tai nguyen va Moi truong biin, 246 Ph6t»Nang , TP Hai Phong

Esmail: nhondh@imer ac vnhoijcnhonhio@yahoo.com

TOM TAT:

Moi truong tr6m tich bdi triJu miJn Bilc n« Nam keo dai tir M6ng cs.tJin Kim San

duoc chia thanh 3 kiiu mang nhiing net tJijc thu khac nhau: miii truong tr6m tich bdi trieu

c hdu th6 keo dai tit Kim Son tJin tdy nam D6 San voi cac tJijc trung chiu anh huang Ian tit

moi truong luc dia , tJijc biet la cac song chay ra , moi truong trdm tich bdi triJu cua s o g

Bach D{mg keo dai tit tdy nam Cat Ba tJin dong bac D6 San voi tJgc trung do thuy tri J u

c h m uu thi s o voi cac song tJ6 vao , moi truong trdm tich bdi triJu viing vinh keo dai tit

M6ng Cai tJin Cat Ba voi tJgc trung cua thuy triJu thdng thi tuyet tJ6i , vai tro cua song luc

ili a anh huang khong dang kl

Thanh phdn trdm ti c h va cac tJij c trung cua moi truong t r dm tich bdi tri J u phan anh

qua thanh phdn trdm tich va phdn b6 cac loai trdm tich nhu cat Ion , cat trung , cat nho , bot

ltm , bun bot nho va bun set bot Cac thong s6 cua trdm tich nhu tJi) dm dao dong tit 13,

61-44,37 %; tJi ) r6ng trdm tich dao tJi)ng 0 , 41-0 , 6 7; pH trdm tich dao dong 6 , 90-8 , 28 ; Eh trdm

tich dao dong (-102 , 60) - (-19,70) mV; Nts trong trdm tich dao dong 283 , 39-1449 , 10 mg / kg

kho ; Pts trong trdm tich dao dong 95,81-646,60 mg / kg kho; Chc trong t r dm tich dao dong

24 , 23 - 1984,32 mg / kg kho; Sts t r o g t r dm tich dao dong 29, 5 - 709 6 , 1 5 mg/kg kho.

S I tdp trung tl! n hi en cua l uu h uyn h va i h am l uong c ao tron g trdm tich a biii tr i eu cua

song Bach Dang va bii i trieu v i ing vin h k eo da i t it Cat Ba t J i n M6 n g Cai cdn duac quan tam

va xu If' trong qua tri n h phdt t ri e n k in h Ii - xd h i Luu huy nh tich tu trong tr6m tich voi ham

luong cao khi gijp m t truong gia u oxi, chu n g se l am g i am p H m arc va trdm tich thdp xuong

se anh huang tJin cac l oa i s inh vdt t huy sinh

MOD Au

M6i tnrong tram tich la kSt qua cua nhi~u q a trinh tuong tac khac nhau trong the

gioi tir nhien, nhtrng thay d6i cua m6i tnrong nr nhien c6 th€ ghi lai nhieu d~u ~n trong

cac t&ng tram tich Nghien ciru m6i truong tram tich nham kh6i phuc lai nhirng di~u kien

xay ra trong qua khir, hien tai, nham danh gia dir bao cho tuong lai Trong diai yen bo

n6i chung, bai tri~u la th€ dia ch~t kha phirc tap, chung chiu tac dong cua nhi~u qua trinh

H6i n g hi Khoa h oc Dia e M t bi d n t oa n q oc t d n (hull

ciru vi cac Iy do v~ IQ'iIch v~ kinh t~ tro g nuoi tro g thuy hai san, cac qua trin bo

truong tr~m tich bai tri~u cira song hinh ph~u phan b6 illtay nam Cat Ba d~n dong b~c D6 Son va rnoi tnrong tr~m tich bai trieu chau th6 phan b6 keo dai nr tay nam f)6 San d~n Kim Son (Ninh Binh) Chung dil diroc cac tac gia trong nuoc nghien cuu cac v~ thanh phan tram tich va t6c d('> lang dong tram tich tren bai trieu Kim San [6], [7], thanh phan tram tich va tien hoa rnoi tnrong

tram tich tren biii trieu Nghla Hung [5], khoang v~t nang va tram tich tren bai trieu Hai Hau -Quat Lam [10], t6c d('>I~g dong va kim loai nang trong tram tich tren bai tri~u cira song Ba Lat [9],[13], d?c di~n dia hoa tren bai trieu Hai Phong - Quang Yen [4], [9], [11], [12], cac d?c trung

v~ kim loai trong tram tich ven bo co bili tri~u H~ Long - Ha C6i [1], [2], [11] nhirng cong trinh d6 dil phan anh m('>ts6 d?c tnrng co ban cua moi tnrong tram tich bai trieu Mi~n B~c Vi~t Nam tuy v~y h~u h~t chung chi dung lai aviec phan tich dac trung tram tich t~ng mat

tho g s6 tram tich nhir thanh phan d('>hat, d('>§.m,d >r6ng, pH, Eh, Nts, Pts, Sts, Chc Nghien

moi vung,

I TAl LI~U vA PHUONG PHAp NGHIEN CUu

1 1 TiliIi~u

Tai li~u trinh bay trong bao cao nay la k~t qua nghien ciru cua d~tai dp Vien Han lam

chdt () nhilm co ac}ctinh trong trdm tich biii trieu ven bi~n miJn B i lc Viet Nam " trong c c dot

khao sat 2012-2013

Thu 7 c('>t16 khoan tr~m tlch tai cac khu VIJC Mong Cai (ky hieu MC VII), cira so g Ba

II), cira Day (ky hieu MC I)

1 2 Phuong phap nghien cuu

12.1 Phuong pluip iliJu tra kluio sat

Cac 16 khoan d~u nam abai trieu thap, tai m6i vi tri thu mfiu duoc xac dinh bang dinh

H 6 i n g hi Kh o a h 9C Di a c hat bi i n t oa n qu oc t d n th{r11

nhfit g~p tren biii trieu Cira Luc - H~ Long (MC V) Tren biii trieu Ba CM - D6ng Rui (MC VI) oQ

r6 g dao oQng0,44-0,64, dQ r6ng trung binh 0,52; tren bai trieu Cira Luc - H~ Long (MC V) oQ

r6 g dao oQng0,41-0,66, oQ r6ng trung binh 0,48; tren biii trieu Hai Phong (MC IV) oQ r6 g dao

don 0,54-0,67, oQr6 g trung binh 0,60; tren bai tri~u cira song Thai Binh (MC III) oQ r6ng dao

oQn 0,48-0,60, oQ r6 g trung binh 0,54; tren bai tri~u cira Ba Lat (MC II) oQ r6 g dao do g

0,44-0,64, oQr6 g trung binh 0,52; tren biii trieu ciraDay (MC I) oQ r6ng dao oQng 0,44-0,56, oQ r6n

trung binh 0,49 (hinh 3)

Hinh 3: D6 r6ng t r dm tieh tren c ae biii triJu ven bo MiJn B&e

II.3 Thanh phAn trAm tich va phan bBtrAm tich

Tren biii trieu ven bo Mi~n B~c phan b6 cac loai trftm tich tir cat Ion, cat trung, c t nho,

bQt Ian, bun bQt nho va bun set bQt,theo chieu thing dung thi thanh phftn trftm tich co su phan di

n ay trong 16 khoan tram tich, sir thay 06i nay phan anh ban chfit moi tnrong (;thai k thanh tao

tr~m tich giai doan 00

Tren bai trieu khu vue Mong Cai (MC VII) phan b6 tram tich co kich tlnroc tu bQt Ian

(Md =0,052-0,084 mm) o€n nhCing kich tluroc cua cat IOn (Md =0,726 mm) Cat IOn(Md =

0,504-0,726 mm) phan b6 (; tftng 26-30 em, oQ chon I9C trung binh (SO= 2,053-2,061); cat trung

(Md= 0,252-0,345 mm) phan b6 ph6 bi€n (; oQ sau 38-52 cm, oQ chon 19Cnr t61 d€n trung binh (So=1,297-1,951); cat nho (Md =0,102-0,247mm) phan b6 ph6 bi~n nhfit trong cQt khoan (;cac

oQsau 54-86 ern, oQ chon 19Ctir t6t o€n kern (So= 1,393-6,381); bQt Ian (Md = 0,052-0,084 mm)

phan b6(;tren tftngm~t (; oQ sau 0-10 ern, oQ chon 19Ckern (So=4,747-5,457)

Tren bill tri~u Cira Luc - H~ Long (MC V) trftm tich phan M illbQt IOn (Md =0,081 mm) o n

catnho (Md = 0,181 mm) Cat nho (Md =0,103-0,181 mm) chi~m dai da s6 trong 16 khoan phan M

i 6-66 em, oQ chon 19Ct6t o~n kern (SO= 1,531-3,518); bQt Ian (Md = 0,080-0,089 mm) phan M

ngay (;tren ~ m~t cQt khoan 0-6cm, oQ chon 19Ccua trtm tich kern (So=3,684-4,047)

~ & g(O

-~r6 n g(0 - 1

0( 1 r 6 ng ( 0 - 1 )

o ~ 0, 8 0 7 0.' DO r M g (G

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21 '

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CHU GIAI

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108'01'

106 ' 00'

Hinh 1: Sa advi tri thu mdu tr e n bdi tri ~ u v e n bo Mi~n Bae n « N am

a-b

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H 9 i n g hi Kh oa h 9C D ia c h t bie n toa n quoc t dn t hu' 1

II KET QuA NGHIEN CUU

ILL DQ ~m tr§m tich

Hinh 2: oo6m tr6m tich tren cac bdi triJu ven be} M i Jn RJc

11.2 DQrBn tr§m tich

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H9i nghi Khoa h9C Dia chat bi i n t o an qu oc i n 1M II

cec th n s 6 t J i m Uc h ( M d s ; s )

Tren bili trieu Hai Phong (MC IV) phan be,3 loai tnlm tich la bQt Ion, bun bot nho va bun set bot BQt Ian (Md = 0,054-0,057 mm) phan b6 adQ sau 42-48 em, bQt Ian co dQ chon 19Ckern

(So= 2,257-2,975); bun bQt nho (Md = 0,011-0,048 mm) la loai tram tich ph6 bien trong CQt khoan phan b6 ill tren mat va xen kep trong cac tAng, dQ chon 19C tram tich kern (So= 2,

878-3,988), bun set bQt (Md = 0,008-0,010 mm) la loai tram tich co kich thurrc nho nhat trong vung phan b6 xen kep trong cac cing tram tich va co dQ day khong Ion, dQ chon 19Ccua tram tich kern

(So= 3,421-3,737)

Tren bili tri~u cira song Thai Binh (MC III) phan b6 trAm tich co kich thuoc tir bun bQt nho d~n kich thuoc cua bQt Ian BQt Ian (Md = 0,051-0,063 mm) pharr b6 phan IO'n trong 16 khoan, chung phan b6 illtren mat, sen kep trong cac tang khac nhau va d~n dQ sau 66 em, dQ chon 19Ccua bQt Ian akhu V\TCnay ill dQW trung binh d~n kern (So= 1,740-3,330); bun bQt nho (Md =

0,022-0,050 mm) phan b6 sen kep trong cac tAng tram tich tren bai trieu, hAu h~t chung d~u co dQ chon 19Ckern (So= 2,893-3,557)

Hinh 4: Cac thong s6trdm tich tren cae biii tri ~ u ven bo mi e n B ac

Tren bili trieu cira Ba Lat (MC II) tram tich phan b6 tir bQt Ian d~n cat nho Cat nho la loai trAm tich xuat hien duy nhftt atAng 2-4 em trong 16 khoan trAm tich Md = ,1 02mm, dQ

chon 19Ct6t BQt Ian (Md = 0,054-0,082 mm) la loai trAm tich ph6 bien nhat trong tram tich

bai trieu, chung co dQ chon 19c tir t6t d~n kern (So= 1,255-3,635)

Tren bl=litrieu cira Day (MC I) tram tich phan b6 mot loai duy nhftt la bQt Ian (Md =

0,051- 0,084 mm), hAu h~t cac tram tich bQt Ian co dQ chon 19C t6t d~n kern (S = 1,

233-3,588) (hinh 4)

11.4 pH cua trAm tich

HAu h~t pH trAm tich bai trieu mi~n B~e thS hien moi tnrong kiem pH >7 Tren bili trieu M6ng Cai (MC VII) pH trAm tich dao dQng 6,94-7,64, trung blnh 7,26; tren bili trieu Ba

Che - D6ng Rui (MC VI) pH tram tich dao dQng 6,90-7,97, trung binh 7,74; tren bl=litrieu Cira

c th O ng 5 6 d Q I tr' m I Ic ( Md , S O ' SJ Cae thOng s6 l rtim Ilch ( M d S o - S l

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L\lC - H<;lLo g (MC V) pH tram tich dao dong 7,45-8,28, trung binh 8,00; tren bai trieu Hai

Phon (MC IV) pH tram tich dab do g 7,37-7,82, trung binh 7,60; tren bai trieu cira son

Thai Binh (MC III) pH tram tich dao dong 7,28-7,85 trung binh 7,57; tren bai trieu cira Ba Lat

(MC II pH tron tram tich dao do g 7,23-7,82, trung binh 7,49; tren bai trieu cira Day (MC I

pH tram tich co gia tri nr 7,11-7,68, trung binh 7,39 (hinh 5)

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Hinh 5: D <3 pH cua tram tieh tren cae bili triJu ven bo mi J n B lie

trung binh (-41,30) m V; tren bai trieu Ba Che -Dbng Rui (MC VI) Eh tr~m tich dao d9 g

(-80,70) - (-19,70) mY, trung binh (-66,95) mY; tren bai tri~u Cira Luc - Ha Long (MC V) Eh

dao d n (-102,60) - (-55,80) mY, trung binh (-87,70) mY; tren bai tri~u Hai Pho g (MC IV)

Eh tram tich dao do g (-76,30) - (-47,80) mY, trung binh (-64,94) mY; tren bai trieu cira Thai

Sinh (MC III) Eh tram tich dao dong (-73,40) - (-27,80) mY, trung binh (-53,75) mY; tren bfii

tri~u cira Ba Lat (MC II) Eh tram tich dao dong (-68,10) - (-36,80) mY, trung binh (-56,90)

mY; va tren bfii trieu Cira Day (MC I) Eh tram tich dao dong (-70,40) - (-40,50) mY, tru g

binh (-54,48) m V (hinh 6)

Eh( m V)

H 6 i n g hi Khoa h oc Dia chdt bi e n t oa n q 6c l dn thu ' /I

Hinb 6:D(J Eh cua trdm tieh tren cac bdi tri~u ven bo men B6e

11.6.NitO'tong tr§m ti eb

H~u h(h ham hrong Nts trong tr~m tich bili tri~u co ham luong cao t~p trung a cira

s6ng Ba Che - D6ng Rui, bai trieu Hili Phong, tiep d~n la bai tri~u vung chau tho Tren bili trieu Mong Cai (MC VII) ham hrong Nts trong tram tich co gia tri 435,85-953,99 mg/kg kh6, trung binh 687,75 mg/kg kh6; tren bili trieu Ba Che - D6ng Rui (MC VI) Nts dao dong 855,53-1449,10 mg/kg kh6, trung binh 1.068,40 mg/kg kh6; tren bai trieu Cira Luc -H~ Long (MC V) Nts dao dQng 283,39-904,56 mg/kg kh6, trung binh 737,17 mg/kg kh6; tren bili trieu Hili Phong (MC IV) ham hrong Nts dao dong 507,20-1245,78 mg/kg kho,

trung binh 885,19 mg/kg kho; tren bili tri~u cira s6ng Thai Binh (MC III) ham luong Nts dao dQng 682,16-942,98 mg/kg kh6, trung binh 791,41 mg/kg kho; tren bai trieu cira Ba Lat (MC II) ham hrong Nts dao dong 633,19-1348,93 mg/kg kh6, trung binh 812,80 mg/kg kh6; tren bai trieu cira Day (MC I) ham luong Nts dao dQng 480,26-769,1 mg/kg kh6, trung binh 672,07 mg/kg kh6 (hinh 7)

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