Checking for non-preferred file/folder path names (may take a long time depending on the number of files/folders) ...
This resource contains some files/folders that have non-preferred characters in their name. Show non-conforming files/folders.
This resource contains content types with files that need to be updated to match with metadata changes. Show content type files that need updating.
Authors: |
|
|
---|---|---|
Owners: |
|
This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource. |
Type: | Resource | |
Storage: | The size of this resource is 38.9 KB | |
Created: | Nov 19, 2019 at 6:20 a.m. | |
Last updated: | Mar 06, 2020 at 7:04 p.m. | |
Citation: | See how to cite this resource | |
Content types: | Single File Content |
Sharing Status: | Public |
---|---|
Views: | 1680 |
Downloads: | 27 |
+1 Votes: | Be the first one to this. |
Comments: | No comments (yet) |
Abstract
Samples were collected from Steve Stone’s property which is adjacent to the Calhoun Long-term forest plots (see map below - click on 'Overview Maps' tab). Three continuous mineral soil cores were collected from 0-14 m with a Geoprobe in Steve Stone’s hardwood forest (“Core Locations” in map). These surficial samples were collected from this location because contemporary vegetation, aerial photography dating back to 1938, and soil profile morphology indicated that European agriculture had minimally affected soils in this hardwood forest. Samples deeper than 14 m were collected from Steve Stone’s pasture, approximately 30 m away from the “core locations”, during the installation of a groundwater well by a private contractor (Gill Drilling Services inc.). Samples from 14-18 m were collected with a three-wing bit auger while samples from 18-67 m were collected with a roller-cone bit. After collection all samples were air-dried, and samples from 0-18 m were sieved to 2 mm.
Texture was measured by the pipette method on 20 g of sample. Soil pH was measured with a continuous flow electrode in deionized water and in 0.01 M CaCl2 with a soil:solution ratio of 0.5 and a 15 minute extraction time. Exchangeable acidity was extracted with 1M KCl (soil:solution=0.002, 30 minute extraction) and titrated to 8.2 with 0.02 M NaOH. Exchangeable calcium, magnesium, potassium, and sodium were extracted with 1 M NH4OAc (soil:solution=0.05, 30 minute extraction) and measured by Atomic Absorption Spectrophotometry. Total aluminum, beryllium, calcium, manganese, silicon, titanium, and zirconium were measured by Inductively coupled plasma atomic emission spectroscopy while total iron, magnesium, phosphorus, potassium, and sodium were measured by Atomic Absorption Spectrophotometry following LiBO2 fusion of pulverized and oxidized (30 minutes at 800 C) subsamples (0.1 g sample, 0.4 g LiBO2, 13 minutes at 1000 C). “Free”-iron and “free”-beryllium (Mehra & Jackson, 1958, DOI: 10.1346/CCMN.1958.0070122) were measured by Atomic Absorption Spectrophotometry after extraction with 1 M NH2OH·HCl in 1 M HCl (soil:solution=0.05, 4 hours at 90 C). Meteoric Beryllium-10 was extracted by KHF and NaSO4 fusion and 10Be/9Be isotopic ratios were measured by accelerator mass spectrometry. Total carbon and nitrogen were measured by combustion on a CE Elantech Flash EA 1112 Elemental Analyzer.
Subject Keywords
Coverage
Spatial
Temporal
Start Date: | |
---|---|
End Date: |
Content
ReadMe.md
CCZO -- Soil Geochemistry -- 70-m deep borehole -- Calhoun Long-Term Soil Experiment -- (2010)
OVERVIEW
Description/Abstract
Samples were collected from Steve Stone’s property which is adjacent to the Calhoun Long-term forest plots (see map below - click on 'Overview Maps' tab). Three continuous mineral soil cores were collected from 0-14 m with a Geoprobe in Steve Stone’s hardwood forest (“Core Locations” in map). These surficial samples were collected from this location because contemporary vegetation, aerial photography dating back to 1938, and soil profile morphology indicated that European agriculture had minimally affected soils in this hardwood forest. Samples deeper than 14 m were collected from Steve Stone’s pasture, approximately 30 m away from the “core locations”, during the installation of a groundwater well by a private contractor (Gill Drilling Services inc.). Samples from 14-18 m were collected with a three-wing bit auger while samples from 18-67 m were collected with a roller-cone bit. After collection all samples were air-dried, and samples from 0-18 m were sieved to 2 mm.
Texture was measured by the pipette method on 20 g of sample. Soil pH was measured with a continuous flow electrode in deionized water and in 0.01 M CaCl2 with a soil:solution ratio of 0.5 and a 15 minute extraction time. Exchangeable acidity was extracted with 1M KCl (soil:solution=0.002, 30 minute extraction) and titrated to 8.2 with 0.02 M NaOH. Exchangeable calcium, magnesium, potassium, and sodium were extracted with 1 M NH4OAc (soil:solution=0.05, 30 minute extraction) and measured by Atomic Absorption Spectrophotometry. Total aluminum, beryllium, calcium, manganese, silicon, titanium, and zirconium were measured by Inductively coupled plasma atomic emission spectroscopy while total iron, magnesium, phosphorus, potassium, and sodium were measured by Atomic Absorption Spectrophotometry following LiBO2 fusion of pulverized and oxidized (30 minutes at 800 C) subsamples (0.1 g sample, 0.4 g LiBO2, 13 minutes at 1000 C). “Free”-iron and “free”-beryllium (Mehra & Jackson, 1958, DOI: 10.1346/CCMN.1958.0070122) were measured by Atomic Absorption Spectrophotometry after extraction with 1 M NH2OH·HCl in 1 M HCl (soil:solution=0.05, 4 hours at 90 C). Meteoric Beryllium-10 was extracted by KHF and NaSO4 fusion and 10Be/9Be isotopic ratios were measured by accelerator mass spectrometry. Total carbon and nitrogen were measured by combustion on a CE Elantech Flash EA 1112 Elemental Analyzer.
Creator/Author
Bacon, A.R.|Richter, Daniel deB.
CZOs
Calhoun
Contact
Allan R. Bacon, 1745 McCarty Drive, University of Florida, Gainesville, FL, 32611, USA. Daniel deB. Richter, 308 Research Drive, Duke University, Durham, NC, 27708, USA.
Subtitle
Sampling depths of 0-18 m and 30-67 m
SUBJECTS
Disciplines
Biogeochemistry|Geochemistry / Mineralogy|Soil Science / Pedology
Topics
Soil Geochemistry
Subtopic
70-m deep borehole
Keywords
Soil|Regolith|Subsoil|Granite|Geochemistry|Residence Time|Totals|Soil Properties|Carbon|Nitrogen|Meteoric beryllium-10|Cosmogenic Nuclides|Calhoun CZO
Variables
Soil_texture|Soil_pH_water|Soil_pH_CaCl2|Soil_KCl_acidity|Soil_exchangeable_Ca|Soil_exchangeable_Mg|Soil_exchangeable_K|Soil_exchangeable_Na|Iron|Magnesium|Phosphorus|Potassium|Sodium|Beryllium|Calcium|Manganese|Silicon|Titanium|Zirconium|Free_beryllium|Free_iron| 10Be_meteoric|carbon|nitrogen
Variables ODM2
Beryllium-10|Calcium|Carbon dioxide|Iron|Magnesium|Manganese|Nitrogen|Phosphorus, total|Potassium, total|Silicon|Sodium, dissolved|Acidity, exchange|pH|Soil texture|Titanium|Zirconium
TEMPORAL
Date Start
2010-06-18
Date End
2010-11-19
SPATIAL
Field Areas
Calhoun Long-Term Soil-Ecosystem Plots and Reference Areas
Location
Calhoun Long-Term Soil Experiment
North latitude
34.606646999999995
South latitude
34.606646999999995
West longitude
-81.723906
East longitude
-81.723906
REFERENCE
Publications of this data
Bacon, Allan R., Daniel deB. Richter, Paul R. Bierman, and Dylan H. Rood (2012). Coupling meteoric 10Be with pedogenic losses of 9Be to improve soil residence time estimates on an ancient North American interfluve. Geology 40 (9): 847–850 http://dx.doi.org/10.1130/G33449.1
CZO ID
4673
Additional Metadata
Name | Value |
---|---|
czos | Calhoun |
czo_id | 4673 |
keywords | Soil, Regolith, Subsoil, Granite, Geochemistry, Residence Time, Totals, Soil Properties, Carbon, Nitrogen, Meteoric beryllium-10, Cosmogenic Nuclides, Calhoun CZO |
subtitle | Sampling depths of 0-18 m and 30-67 m |
variables | Soil_texture, Soil_pH_water, Soil_pH_CaCl2, Soil_KCl_acidity, Soil_exchangeable_Ca, Soil_exchangeable_Mg, Soil_exchangeable_K, Soil_exchangeable_Na, Iron, Magnesium, Phosphorus, Potassium, Sodium, Beryllium, Calcium, Manganese, Silicon, Titanium, Zirconium, Free_beryllium, Free_iron, 10Be_meteoric, carbon, nitrogen |
disciplines | Biogeochemistry, Geochemistry / Mineralogy, Soil Science / Pedology |
Related Resources
This resource is referenced by | Bacon, Allan R., Daniel deB. Richter, Paul R. Bierman, and Dylan H. Rood (2012). Coupling meteoric 10Be with pedogenic losses of 9Be to improve soil residence time estimates on an ancient North American interfluve. Geology 40 (9): 847–850 http://dx.doi.org/10.1130/G33449.1 |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
Comments
There are currently no comments
New Comment