Geology and Soils

Author: nick on 12-09-2013, 21:00, views: 5 400

29

(a) The geological formations in the area consist of the Quaternary sedimentary deposits, and the Tertiary Coastal Plain Sands, generally referred to as Calabar Formation.

 

The Quaternary sediments give rise to alluvial plains as well as the beach ridge sands. The alluvial plains include the mangrove mudflats, which are under the influence of tidal brackish waters along the coast and in the estuaries of rivers and creeks, and the fresh water flood plains and swamps which form the wetland environments found along the upper reaches of rivers, creeks, tributaries and meander belts. The beach ridge sands form some raised portion of land between the mangrove swamps and the shoreline. The mangrove mudflats contain strata of mixed inorganic matters and plant debris.

 

In the water courses of the freshwater alluvium, the sandy materials consist of yellow/milky white silt to fine-grained sand particles that are sub-angular to sub-rounded.

 

The flood plains and inter tributary areas have light grey to dark carbonaceous mud and clay.

 

The Tertiary Coastal Plain Sand, or Calabar Formation is older and consists of beds of unconsolidated coarse textured sandstones, inter-bedded with layers of fine grained massive clay.

 

Beach Ridge Soils The soils developed on Beach Ridge Sands are sandy and poorly drained. They are acidic, low in organic matter and clay content and, therefore, they have low capacity to adsorb and retain nutrients. They are generally poor in fertility and productivity and are, therefore, not important agriculturally. With proper management, coconut palm and cashew nut have, however, been found to thrive well in these soils.

 

Mangrove Soils

 

The mangrove soils are derived from a mixture of mineral and organic materials of marine origin. They are dark grey in colour and are periodically flooded with tidal water. They have high organic matter and are generally saline, supporting only salt-tolerant plants, such as mangrove trees and Nypa palms. When wet, they are neutral or alkaline in reaction, but when dry or drained, they become acidic. This is due to the presence of pyritic or sulphidic materials, which on aeration or oxidation, produce an appreciable amount of sulphuric acid. The soils are, in this respect, referred to as Acidic-Sulphate Soils. Being in a very difficult terrain, the soils have not been attractive for agricultural investment.

 

Floodplains Alluvial Soils

 

The soils of the floodplains, outside the influence of saline tidal waters, are non-saline, but are developed on sandy parent materials. They are low in fertility and have not been widely used for agricultural production. Because of the sandy parent materials and excessive flooding, they are also not suitable for wetland rice production. Where there is carbonaceous mud and clay, short-duration vegetable crops, like tomatoes, pepper, spinach, okra and cereals, like cowpea and maize, may be successfully and profitably raised during the short dry period of the year, when the floodplains would be dry. However, the most important economic crop in this wetland area is the raffia palm, which thrives very well in these hydromorphic soils.

 

Soils of the Coastal Plain Sands

 

The most important soils in the area are those, developed on Tertiary Coastal Plain Sands in the upland part of the local government area. Most of the farming activities are carried out in these soils. The soils cover over 60% of the total land area of the local government area.

 

The soils are deep, have loamy sand to sandy loam surface over clay loam to sandy clay subsoil. They have good physical attributes for seedbed preparation, but because of their sandy nature, they are fragile and highly susceptible to erosion.

 

The soils are acidic and are generally referred to as Acid Sands. They are well drained and strongly weathered. Generally, the soils are poor in fertility, suffering from maltinutrient deficiencies. The soils can, however, be made fertile and productive, if adequate soil management practices are adopted.

скачать dle 11.1смотреть фильмы бесплатно

Category: Physical Features and Natural Resources

Dear visitor, you are browsing our website as Guest.
We strongly recommend you to register and login to view hidden contents.
<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
24 January 2018 23:11

Thurmond

  • Usergroup: Members
  • Register: 24.01.2018
  • Status: Currently Offlline
 
الجيولوجيا هو موضوع صعب و أقل جدا الناس لديهم المعرفة المناسبة  على ذلك. لقد حاولت والناس مضللون الآخرين على ذلك الوقت الكبير عمل سيرة ذاتية جاهزة. نحن بحاجة إلى  القيام بشيء حيال ذلك.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
24 February 2018 22:45

ADELYNA

  • Usergroup: Members
  • Register: 24.02.2018
  • Status: Currently Offlline
 
Geology is very hard to thing to understand. I think that with passage of http://college-paper-writing-service.reviews/college-paper-org-reviews/ things will get little bit tricky and you won’t be able to understand what is going on here.

<
  • Articles: 0
  • Comments: 24
  • ICQ: {icq}
12 April 2018 11:06

albinamuro2

  • Usergroup: Members
  • Register: 27.02.2018
  • Status: Currently Offlline
 
Im no expert, but I believe you just made an excellent point. You certainly fully understand what youre speaking about, and I can truly get behind that. More Help

<
  • Articles: 0
  • Comments: 212
  • ICQ: {icq}
25 April 2018 21:38

stunnera1234

  • Usergroup: Members
  • Register: 14.11.2017
  • Status: Currently Offlline
 
thanks  for sharing this facts. I truly like your weblog publish very plenty. you've  got genuinely shared a informative and exciting blog submit with human  beings.. iqoption

<
  • Articles: 0
  • Comments: 163
  • ICQ: {icq}
16 May 2018 23:14

aftabak

  • Usergroup: Members
  • Register: 4.04.2018
  • Status: Currently Offlline
 
merchant to locate an appropriate purchaser or the other way around past one's market turned into an enormous undertaking. olymptrade

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
29 June 2018 16:21

Latifah Harper

  • Usergroup: Members
  • Register: 29.06.2018
  • Status: Currently Offlline
 
Geological floods on the wide areas that have to some arrangements to draining the water on the extra rains without season. For the soils and geology students most visit on www.assignmentgeek.com.au website making the soils for the farms and gardening.

<
  • Articles: 4
  • Comments: 656
  • ICQ: {icq}
29 January 2019 08:07

attaseo

  • Usergroup: Members
  • Register: 20.11.2018
  • Status: Currently Offlline
 
very interesting keep  posting.Calculatoare

<
  • Articles: 1
  • Comments: 1
  • ICQ: {icq}
7 April 2019 06:17

buyliquidclomi

  • Usergroup: Members
  • Register: 7.04.2019
  • Status: Currently Offlline
 
Thanks for sharing the post. really I appreciate read carefully your article. 
The mass spectrometric discontinuity of four developing medication hopefuls was explained by positive electrospray ionization and impact incited separation utilizing a high goals/high precision mass spectrometer. A screening and affirmation strategy was set up dependent on fluid chromatography/pair mass spectrometry requiring a volume of 100 microL of plasma. Proteins were encouraged utilizing acetonitrile, the examples were centrifuged and the supernatant investigated utilizing a triple-quadrupole mass spectrometer utilizing numerous response checking of demonstrative particle advances.
The technique was approved as to particularity, furthest reaches of identification (0.4-8.3 ng/mL), recuperations (72-98%), intraday and interday precisions (12-21%), and particle concealment/upgrade impacts on to buy liquid clomi.

<
  • Articles: 0
  • Comments: 5
  • ICQ: {icq}
7 August 2019 12:33

susanmayer

  • Usergroup: Members
  • Register: 7.08.2019
  • Status: Currently Offlline
 
Aw, it was an exceptionally good post. In idea I must set up writing such as this additionally – spending time and actual effort to have a very good article… but exactly what can I say… I procrastinate alot and also no means find a way to get something accomplished.
things to do

<
  • Articles: 1
  • Comments: 6
  • ICQ: {icq}
3 September 2019 14:28

surajbag948

  • Usergroup: Members
  • Register: 18.01.2019
  • Status: Currently Offlline
 
The best Online Slots games for UK players are here. Once you see the Gambling Commission logo on a site, you can feel safe there. Well done slots give to chance everyone to win game with real money.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
13 January 2020 09:52

Carson Hargrove

  • Usergroup: Members
  • Register: 13.01.2020
  • Status: Currently Offlline
 
<
  • Articles: 0
  • Comments: 1 256
  • ICQ: {icq}
20 January 2020 13:09

mtom78632

  • Usergroup: Members
  • Register: 6.08.2018
  • Status: Currently Offlline
 
Business  development Even if two businesses are in the same segment, every business  has its own requirements, processes, objectives and goals. In order to  achieve the same, the solutions should be customized and developed to support  the future needs. With a range of services to choose from, you can relax by  trusting us with your business application development. Web Development Services

<
  • Articles: 1
  • Comments: 15
  • ICQ: {icq}
22 January 2020 22:40

noel

  • Usergroup: Members
  • Register: 22.01.2020
  • Status: Currently Offlline
 
We are provided custom boxes, custom packaging boxes, packaging boxes uk, cheap custom boxes, custom packaging boxes with logo, custom printed boxes, custom cardboard boxes, personalised packaging printing, personalised gift boxes, custom luxury packaging, high quality custom boxes, custom packaging, cheap packaging boxes, bespoke packaging supplier, small custom boxes, large custom boxes, best custom boxes, packaging printing uk, custom boxes online, small box company, personalised logo boxes, custom packaging no minimum, bespoke packaging uk, custom boxes company

Custom Boxes

<
  • Articles: 0
  • Comments: 20
  • ICQ: {icq}
13 February 2020 10:32

Celikermakina

  • Usergroup: Members
  • Register: 12.02.2020
  • Status: Currently Offlline
 
Çelikermakina Firmamız Hakkında
Kaldırma ve Taşıma Ekipmanları sektöründe hizmet vermek üzere kurulan firmamız, kurucuların meslek ve bilgi alanları nedeniyle ağırlıklı olarak Kaldırma ve Taşıma Ekipmanları, Çelik Halat, vinç ve Deniz sektöründe siz değerli müşterilerimizin ihtiyaçlarını karşılamak amacıyla Tuzla ve İmes sanayi bölgelerinde kurulmuştur. Monoray Vinç
 
KURULUŞ AMACIMIZ
Ülke çapında kaldırma ve Taşıma Ekipmanları,Çelik Halat, Zincir ve Deniz sektöründe öncü olmak ve liderliği hergün daha da büyüyen bir organizasyonla sürdürmek, Siz müşterilerimizin ihtiyaçlarını, geniş ürün yelpazesine sahip stoklarımızla karşılamak , Fiyat uygunluğu ve dürüst çalışmayı kendisine ilke edinmiş olan firmamız, bölge bayisi olduğumuz, dünya çapındakendini kanıtlamış markaların sanayinin önde gelen firmaları tarafından tercih edilen üstün nitelikli, kaliteli ve sertifikalı ürünlerini tecrübeli personelimiz ile tarafınıza en hızlı şekilde ulaştırılmasında tüm enerjimiz ile çalışmaktır. elektrikli caraskal
 
KALİTE POLİTİKAMIZKaldırma ve Taşıma Ekipmanları,Çelik Halat, Zincir ve Deniz sektöründe müşterilerimizle uluslararası kabul görmüş standartlarda en iyi hizmeti sunarak lider firma olmak, tüm çalışan- larımızla sürekli kalite kavramını çevreci bir anlayış içinde tatbik etmek şirketimizin politikasıdır. halatlı vinç

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
28 February 2020 10:48

dionoradian

  • Usergroup: Members
  • Register: 28.02.2020
  • Status: Currently Offlline
 
We additionally love the SuperLATCH system with push-on connectors which can be lots less complicated to apply than the older ones. diono radian 3 review The low profile facets also are certainly exceptional for self-enough toddlers and preschoolers to climb in and out of the seat on their own. Parents have additionally cherished the fold-flat characteristic for less difficult delivery even as visiting.

<
  • Articles: 0
  • Comments: 5
  • ICQ: {icq}
25 March 2020 04:17

susanmayer

  • Usergroup: Members
  • Register: 7.08.2019
  • Status: Currently Offlline
 
I am upbeat to discover this post exceptionally helpful for me, as it contains part of data. I generally want to peruse the quality substance and this thing I found in you post. There are so many fun and exciting things to do and experience around the world that I thought I'd put together a list of myfavourite Things to do post for all travelers ...

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
14 April 2020 15:03

loslliya

  • Usergroup: Members
  • Register: 14.04.2020
  • Status: Currently Offlline
 
That is a record breaking event. Testosterone is a phase backward. I'm not proposing you become all informed fartsy. You may recognize that I'm madder than a wet hen. You have to do it genuinely. My popularity has remained epic. check my blog  Drawn in Boost Reviews has been done with Male Health Tips beforehand. Male Enhancement was profiled by stacks of news affiliations. You should develop a mental picture of Male Enhancement Tips.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
13 May 2020 06:16

gnhk857

  • Usergroup: Members
  • Register: 13.05.2020
  • Status: Currently Offlline
 
That is a fallacy as it implies that individual spins 카지노사이트 affect the next ones. Today online slot games use random number generator (RNG) systems, which produce random results on each spin regardless of the previous turn. So, it is pure chance whether you will win or lose.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
8 June 2020 07:27

akshaydiya

  • Usergroup: Members
  • Register: 8.06.2020
  • Status: Currently Offlline
 
Phenomenal approach to beat the traffic and fuel cost! The application is a decent method to discover rides for you day by day office drive. Since it targets customary clients, it turns out to be genuinely simple over an opportunity to discover appropriate ride since you definitely know who's going what direction. As a ride supplier, Bike Pooling In Hyderabad  it spares a ton for me on fuel cost.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
23 July 2020 08:15

athitheefoyel

  • Usergroup: Members
  • Register: 23.07.2020
  • Status: Currently Offlline
 
The forthcoming Cross Island Line will have a station called Serangoon North MRT Station, as reported by Minister Mr Khaw Boon Wan in Jan 2019. affinity at  serangoon floorplans Liking at Serangoon MRT nearest station will be Serangoon North MRT Station only 4 mins leave!

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
10 August 2020 15:11

aksharadev

  • Usergroup: Members
  • Register: 10.08.2020
  • Status: Currently Offlline
 
Moreover, noticeable stops, for example, Hort Park, Kent Ridge Park, and West Coast Park are a couple of good ways from Parc Clematis Condo. parc clematis condo This implies you don't need to head out far to get fantastic spots where you can appreciate some time with your companions or relatives.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
12 August 2020 09:26

rioparker

  • Usergroup: Members
  • Register: 12.08.2020
  • Status: Currently Offlline
 
Each parent's fantasy is to bring their children up in a domain with access to exceptional instructive offices. This is absolutely what you find at Buangkok. Your future home at Sengkang Grand Residences is deliberately arranged close to an assortment of schools empowering school going youngsters to appreciate fast drives. https://www.sengkang-grands-residences.com/ The astounding transportation arrange in the region implies that your children will have agreeable drives.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
14 August 2020 14:34

shilpaasmith

  • Usergroup: Members
  • Register: 14.08.2020
  • Status: Currently Offlline
 
One Pearl Bank will be the main major private venture on Pearl's Hill. It will offer One Pearl Bank Condo occupants a selective open door for living in a urban district, https://www.onespearlbank.com/ which is encircled by various lovely gardens. This lavish nursery city has diverted numerous specialists from everywhere throughout the world into onlookers.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
5 September 2020 13:29

manthrazee

  • Usergroup: Members
  • Register: 5.09.2020
  • Status: Currently Offlline
 
UIC has set a norm in Singapore in each industry that it has ventured forward in with its new advancement Avenue South Residence focal business locale. avenue south  residence There is no restriction for the organization and it can go the extent that it can see. Surveys for the improvement are exceptionally respected by the organization.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
10 September 2020 17:06

cathirnemayo

  • Usergroup: Members
  • Register: 10.09.2020
  • Status: Currently Offlline
 
Anticipating making your new home enthusiastic with energizing changes? In the event that truly, District 21 of Singapore is the best spot to be. Containing Upper Bukit Timah, District 21 spotlights on Education highlighting the absolute best schools in Singapore. forett @ bukit  timah It is the ideal spot to call home in the event that you are a family individual. In any case, District 21 doesn't simply flaunt great schools, it is wealthy in different civilities too.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
21 September 2020 08:28

queenmadona

  • Usergroup: Members
  • Register: 21.09.2020
  • Status: Currently Offlline
 
With one of a kind IP purchase genuine Facebook votes from confirmed email addresses. Get valid decisions in favor of the challenge through the approval of Facebook with remarkable IP and settle on your advancement with brilliant decisions. get votes for  online contests Having valuable incorporations and mindfulness from brilliant options and dependable assistance assets implies getting flawlessness and en-capacity to gain ground with the assistance of savvy plans. To get casts a ballot in Facebook casting a ballot is genuine and has incredible including plans to explain the moment plans. Finance managers, authorities, agents have their official and individual records on Facebook.

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
24 September 2020 13:55

justin234

  • Usergroup: Members
  • Register: 24.09.2020
  • Status: Currently Offlline
 
TheLight Controllers advertise report spotlights on the COVID19 Outbreak Impactexamination of key focuses affecting the development of the market. The insightreport arranged contains subtleties on the main players of the Global LightControllers Market, alongside different depending viewpoints related andconnected with the market. Profile the Top Key Players of Light Controllers,with deals, income and worldwide piece of the pie of Light Controllers arebroke down determinedly via scene complexity and address data. Upstream crudematerials and instrumentation and downstream interest investigation isfurthermore administrated.condo near newton mrt

<
  • Articles: 0
  • Comments: 1
  • ICQ: {icq}
30 September 2020 09:30

norahjoel

  • Usergroup: Members
  • Register: 30.09.2020
  • Status: Currently Offlline
 
The area of Clavon is inside nearness to a solid instructive group secured by the National University of Singapore, clavon clementi  review NUS High School and Nan Hua High.

<
  • Articles: 0
  • Comments: 31
  • ICQ: {icq}
25 October 2020 08:25

pak24tv

  • Usergroup: Members
  • Register: 24.10.2020
  • Status: Currently Offlline
 
I am happy to find your distinguished way of writing the post. Now you make it easy for me to understand and implement the concept. Thank you for the post. darshana tv chakde tv booba cartoon

Information
Users of Guests are not allowed to comment this publication.