Sediments Lab.docx - limmm Senlimcnl Chm.35 CD CORAL 5 SAND...

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Unformatted text preview: limmm Senlimcnl Chm .35 CD! CORAL 5- SAND Cl- CLAV ll- IAVA Figure 4-37 Douom sediment chart. Abbreviations used on navigational charts: bk black Bids boulders br brown brk broken bu blue Ca calcareous ch chocolate Ck chalk Cl clay Co coral crs coorse Di diatom dk dark fn fine - Fr foraminifem G gravel gl Globigerina Glac glacial go green Grd ground hrd hard K Kelp La lava lrg large it light M mud Mn manganese nodules Ml marl Ms mussels Or orange Oys oysters Oz ooze P pebbles Pt ptcropuds Qz quartz Rd radiolarian rd red Rk rocky S sand sit sofi Sh shells sml small St sticky vi violet Vol Ash volcanic ash Vol volcanic wh white yl yellow EXERCISE 1. BOTTOM SEDIMENT CHARTS l. Commencement Bay Chart (Figure 4-4). a. Complete the bottom sediment chart by drawing the boundaries between the various sediment types. b. What is the dominant sediment shown on thochat‘lfl ‘33.! L! S ’ C. Is this a size class, origin or compositional term? M d. Is there a rclationshipbctwecn sediment type and depth? (Son r, ymetxy chart for Commencement Bay, Figure 2-8, p. 2 7;)17 eidnion ‘ ’ r c. What is the most probable type of on ' Wing points on thechart: ‘1 i f l. 2. .' —‘ 4f! Sediment Samples 5 Look at the samples and use There are three stations set up with marine sediment sample ) to identify class at a young 389- the attached pictures (Please excuse the quality._ Ifailed art inns below: the mineral grains and biological material. Answer the quest Sample #1- Gulf coast, Florida 1 Describe the mineral and biological materials you see In the sample. What is the relative proportion of terrigenous to blogenuus sediments? + Qr nDI/LS ’i’mw 1% WM. éeszmis L/- 94/1 a Q Q, M flmbrrlmyfig 7L Sample #2 — Gulf Coast, Florida 1. Describe the mineral and biological materials you see in the sample. What is the relative pro when of em enous o o enous se men s TphLVF/t egni t goal/m m 5W ~99 Will/HS My vi \8 (”0545/ (VWva’ 31-89 him AWL mvi iremympb Waves 4 ,, 2. What Is the average grain size of the sample (i.e. sand, silt, etc)? | a m m M ‘ l 3. Do you think this' Is a high energy or low energy depositional environment? Give your reasons. W38 emr beam In; me 3 m D) “f M [Q, W& will Sowing ou think Sample #1 or #2 represents a higher energy depositional environment? 4. Day . Give your reasons. la: 2 “‘8 hr; hlr ”(cal/kw Sample #3A, B, andI c —Atrantlc Coast am la and 1. Sample 3A and sample 33 are from the same beach. Describe each 5 P compare their grain size as wéll as compositions of the grains. 37H @MQVJ‘Z /heav 3mm) Wg’Z/ W5”) Ajfi’ZM/Vzm Ema fizmgj/ 331/, oar! serviced W 11053. MQM/Q/ Sample #4 — Andros Island, Bahamas 1. Describe the mineral and blolngltal materials you see in the sample. What Is the relatlve proportion of terrigenuus to blogenous sediments? 3mm {3 W3. SYN; . b/Zemm 94/120 Wm ‘ 06G n‘ a, L; W): fa / 8W i/wferm 5/94/14; ta)? ' . sand sllt E 2 What Is the average graln slze of the sample (Le I 3mm fife nk '5 the 3 H d 7 VII/hat do you thl I OW 085 this sample dlffer from the previous two samples reason formfpf‘féiellce? R ‘\D SSIZ’: (F m| 8 Sam ’05ng anfl. Will (MM regamblu 36 /l/lis Wehflll CW {Pom a hflh/r W75 any: ran/@910” 4. How does thls sample typify" the type of sedlments usually found In tréplcal t6 subtrbpical seas? ‘ /f0‘7m?£ $2le , Sample #5 — Carbonate Beach Sediments 1. Describe the grain size of these sediments. Describe any fragments that you can Tm mes are 00,, , We, V . Wig PMOWS Mo fl, M3 8:26— 1mm yij Qmthm 2. Do these sediments look different from the sediments of Sample #4? if 50, describe how they look different. What do you think caused this difference? W 33:5 in Semyplg Ll [Mug ..mumb%?2r 1‘. Wm ‘omgyjmoui/ ‘fi-‘ifiufl % thinoderm Spines $th $02 Meow/Z flack Jamaica '” 9::ng WW m r. m goorg SUV—kij gym/V) —- mm are“! I y 0 [91‘ gflmw * *Yr‘o 31I10‘46 / 2) Day; 1% cnur‘oflmevfl' 3449’ (mafia 9% >C(‘(. {{ch H‘gh ewfig em ronmch, «.5 .-. ...
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