Potential Acid Producing Soils in New Jersey [New Jersey] Full Details
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Full Details
- Title:
- Potential Acid Producing Soils in New Jersey [New Jersey]
- Description:
- Soil pH is the measure of the pH of soil water, which depends on the hydrogen ion (H+) activity in solution. Soils become naturally acidic for three major reasons: rainfall and leaching, acidic parent material, and decay of organic matter which produces hydrogen ions. Sulfide-bearing (pyritic) Cretaceous and Cenozoic marine and estuarine sediments, depicted on this map, are potential acid-soil producers. The development of acid-sulfate soils occurs when sulfide minerals, such as pyrite and/or elemental sulfur, in reduced sulfidic sediments, oxidize upon air exposure through drainage or earth-moving operations. The overall acid-sulfate soil-forming process involves a complex chain of reactions that connect the oxidation of iron sulfides to the release of iron oxyhydrates (+ hydronium jarosite, H3OFe3+3(SO4)2(OH)6) and sulfuric acids. For pyrite and marcasite, the overall reaction is: FeS2 + 3.75O2 + 3.5 H2O -> Fe(OH)3 + 2H2SO4 (pyrite/marcasite) (iron oxyhydrate) (sulfuric acid) Acid-sulfate soil formation occurs if the reduced sulfur components exceed the acid-neutralizing capacity of adsorbed bases and easily weatherable silicate and carbonate minerals. Natural Resource Conservation Service reports (see for example Soil Survey of Monmouth County) demonstrate that soils developed on these sulfidic, non-calcareous, marine sediments are strongly (pH < 5.5) to extremely acid (pH < 4.5). Depicted on the geologic map are the sedimentary units with the potential to produce acid (sulfate) soils: Kirkwood, Shark River, Manasquan, Hornerstown, Tinton, Sandy Hook Member of the Red Bank, Navesink, Wenonah, Marshalltown, Englishtown, Woodbury, Merchantville, Cheesequake, Magothy, and Raritan Formations.
- Creator:
- New Jersey Department of Environmental Protection, New Jersey Geological Survey
- Provider:
- New Jersey Department of Environmental Protection's (NJDEP) Bureau of GIS
- Resource Class:
- Datasets and Web services
- Resource Type:
- Vector data
- Temporal Coverage:
- Continually updated resource
- Date Issued:
- 2019-07-03
- Place:
- Rights:
- New Jersey Department of Environmental Protection (NJDEP) Data Distribution Agreement. The data provided herein are distributed subject to the following conditions and restrictions: NJDEP assumes no responsibility to maintain them in any manner or form and disclaims any duty or obligation to either maintain availability of or to update the data. Terms of Agreement 1. All data is provided, as is, without any representation or warranty of any kind, implied, expressed or statutory including, but not limited to, the warranties of non-infringement of third party rights, title, merchantability or fitness for a particular use, freedom from computer virus nor are any such warranties to be implied with respect to the digital data layers furnished hereunder. User is responsible for understanding the accuracy limitations of all digital data layers provided herein, as documented in the accompanying cross-reference files (see SUPPLEMENTAL INFORMATION). Any reproduction or manipulation of the above data must ensure that the coordinate reference system remains intact. 2. Digital data received from the NJDEP may not be reproduced or redistributed without all the metadata provided. 3. Any maps, publications, reports, or other documents produced as a result of this project that utilize this digital data will credit the NJDEP's Geographic Information System (GIS) as the source of the data with the following credit/disclaimer: 'This (map/publication/report) was developed using New Jersey Department of Environmental Protection Geographic Information System digital data, but this secondary product has not been verified by NJDEP and is not state-authorized or endorsed.' 4. NJDEP makes no warranty that digital data are free of Copyright or Trademark claims or other restrictions or limitations on free use or display. Making a copy of this data may be subject to the copyright of trademark laws.
- Access Rights:
- Public
- Format:
- Shapefile
- Language:
- English
- Date Added:
- 2023-03-08